Inwall - Iridious

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Inwall (ĭnw�l), n. An inner wall; specifically (Metal.), the inner wall, or lining, of a blast furnace.
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Inward (ĭnwẽrd), a. [AS. inweard, inneweard, innanweard, fr. innan, inne, within (fr. in in; see ) + the suffix -weard, E. -ward.]
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1. Being or placed within; inner; interior; -- opposed to outward. Milton.
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2. Seated in the mind, heart, spirit, or soul. “Inward beauty.” Shak.
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3. Intimate; domestic; private. [Obs.]
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All my inward friends abhorred me. Job xix. 19.
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He had had occasion, by one very inward with him, to know in part the discourse of his life. Sir P. Sidney.
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Inward, n. 1. That which is inward or within; especially, in the plural, the inner parts or organs of the body; the viscera. Jer. Taylor.
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Then sacrificing, laid the inwards and their fat. Milton.
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2. The mental faculties; -- usually pl. [Obs.]
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3. An intimate or familiar friend or acquaintance. [Obs.] “I was an inward of his.” Shak.

{ Inward (?), Inwards (?), } adv. [AS. inweard. The ending -s is prop. a genitive ending. See , a., .]
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1. Toward the inside; toward the center or interior; as, to bend a thing inward.
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2. Into, or toward, the mind or thoughts; inwardly; as, to turn the attention inward.
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So much the rather, thou Celestial Light,
Shine inward. Milton.
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Inwardly (?), adv. [AS. inweardlice.]
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1. In the inner parts; internally.
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Let Benedick, like covered fire,
Consume away in sighs, waste inwardly. Shak.
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2. Toward the center; inward; as, to curve inwardly.
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3. In the heart or mind; mentally; privately; secretly; as, he inwardly repines.
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4. Intimately; thoroughly. [Obs.]
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I shall desire to know him more inwardly. Beau. & Fl.
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inward-moving adj. moving or directed toward the center or axis, especially when spinning or traveling in a curve.
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Inwardness, n. 1. Internal or true state; essential nature; as, the inwardness of conduct.
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Sense can not arrive to the inwardness
Of things. Dr. H. More.
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2. Intimacy; familiarity. [Obs.] Shak.
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3. Heartiness; earnestness.
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What was wanted was more inwardness, more feeling. M. Arnold.
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Inwards (?), adv. See .
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Inweave (?), v. t. To weave in or together; to intermix or intertwine by weaving; to interlace.
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Down they cast
Their crowns, inwove with amaranth and gold. Milton.
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Inwheel (?), v. t. To encircle. [R.] Beau. & Fl.
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Inwit (?), n. Inward sense; mind; understanding; conscience. [Obs.] Wyclif.
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Inwith (?), prep. Within. [Obs.]
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This purse hath she inwith her bosom hid. Chaucer.
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Inwork (?), v. t. & i. [Pref. in- + work. Cf. .] To work in or within.
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Inworn (?), p. a. Worn, wrought, or stamped in. [R.] Milton.
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Inwrap (?), v. t. [Written also enwrap.]
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1. To cover by wrapping; to involve; to infold; as, to inwrap in a cloak, in smoke, etc.
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2. To involve, as in difficulty or perplexity; to perplex. [R.] Bp. Hall.
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Inwreathe (?), v. t. To surround or encompass as with a wreath. [Written also enwreathe.]
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Resplendent locks, inwreathed with beams. Milton.
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Inwrought (?), p. p. or a. [Pref. in- + wrought. Cf. .] Wrought or worked in or among other things; worked into any fabric so as to from a part of its texture; wrought or adorned, as with figures.
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His mantle hairy, and his bonnet sedge,
Inwrought with figures dim. Milton.
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Io (?), n.; pl. Ios (#). [L.; cf. Gr. iw.] An exclamation of joy or triumph; -- often interjectional.
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Io (ēō), prop. n. [Gr. 'Iw.] 1. In Greek mythology, the beautiful daughter of Inachus, king of Argos, Greece, who was changed by Hera (Juno), in a fit of jealousy, into a white heifer, and placed under the watch of Argus of the hundred eyes.
When Argus was killed by Hermes at the command of Zeus, the heifer was maddened by a terrible gadfly sent by Hera, and wandered about until she arrived in Egypt. There she recovered her original shape, and bore Epaphus to Zeus. Epaphus became the ancestor of Ægyptus, Damaus, Cepheus, and Phineus. She was identified by the Egyptians with Isis. According to another legend, Io was carried off by Phoenician traders who landed in Argos. The myth is generally explained to be Aah or the moon wandering in the starry skies, symbolized by the hundred-eyed Argus; her transformation into a horned heifer representing the crescent moon.
[Century Dict. 1906]

Greek mythology, too, knew her [Astarte] as Iô and Europa, and she was fitly symbolised by the cow whose horns resemble the supine lunar crescent as seen in the south. Seyce (Anc. Empires, p. 195).
[Century Dict. 1906]

2. One of the large moons of the planet Jupiter, remarkable for its intense volcanic activity, as observed in fly-bys of space probes. It was named after the mythological Io. The remarkable images of Io and Jupiter obtained by the Galileo 2 space probe to Jupiter and Hubble photographs are available at the web site of NASA. Reproduced here are:
Surface of Io.
Full disk of Io passing, over the clouds of Jupiter.
Jupiter with Io in transit.
More images are available at the NASA site. [PJC]

Iod- (?). (Chem.) See .
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Iodal (ī�d�l), n. [Iod- + alcohol.] (Chem.) An oily liquid, CI3.CHO, analogous to chloral and bromal.
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Iodate (ī�d�t), n. (Chem.) A salt of iodic acid.
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Iodhydrin (?), n. [Iod- + chlorhydrin.] (Chem.) One of a series of compounds containing iodine, and analogous to the chlorhydrins.
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Iodic (?), a. [Cf. F. iodique. See .] (Chem.) Pertaining to, or containing, iodine; specif., denoting those compounds in which it has a relatively high valence; as, iodic acid.
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Coloq. Iodic acid , a monobasic acid (HIO3), consisting of iodine with three parts of oxygen and one of hydrogen.
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Iodide (?), n. (Chem.) A binary compound of iodine, or one which may be regarded as binary, in which iodine has a valence of -1; as, potassium iodide.
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iodinate v. (Chem.) to cause to combine with iodine; as, iodinate thyroxine.
Syn. -- .
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iodinated adj. (Chem.) treated or reacted with iodine; treated so as to combine with iodine. The iodinating agent may be other than iodine itself, such as compounds with active iodine.
Syn. -- iodized.
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iodinating adj. [p. p. of verb iodinate] (Chem.) combining or causing to combine with iodine; as, the active iodinating species; the in vivo iodinating mechanism. Inverse of de-iodinating.
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iodination n. (Chem.) the substitution or addition of iodine atoms in organic compounds.
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Iodine (ī�dĭn or ī�dēn; 104), n. [Gr. 'iwdhs violetlike; 'ion a violet + e'i^dos form: cf. F. iode, iodine. The name was given from the violet color of its vapor. See , .] (Chem.) A nonmetallic element, of the halogen group of atomic number 53, occurring always in combination, as in the iodides. When isolated it is in the form of dark gray metallic scales, resembling plumbago, soft but brittle, and emitting a chlorinelike odor. Symbol I. Atomic weight 126.90. If heated, iodine volatilizes in beautiful violet vapors.
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☞ Iodine was formerly obtained from the ashes of seaweed (kelp or varec), but is now also extracted from certain natural brines. In the free state, iodine, even in very minute quantities, colors starch blue. Iodine and its compounds are largely used in medicine (as in liniments, antisyphilitics, etc.), in photography, in the preparation of aniline dyes, and as an indicator in titration.
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Coloq. Iodine green , an artificial green dyestuff, consisting of an iodine derivative of rosaniline; -- called also night green. -- Coloq. Iodine scarlet , a pigment of an intense scarlet color, consisting of mercuric iodide. -- Coloq. Iodine yellow , a brilliant yellow pigment, consisting of plumbic iodide.
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Iodism (?), n. (Med.) A morbid state produced by the use of iodine and its compounds, and characterized by palpitation, depression, and general emaciation, with a pustular eruption upon the skin.
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Iodize (?), v. t. [imp. & p. p. Iodized (?); p. pr. & vb. n. Iodizing (?).] To treat or impregnate with iodine or its compounds; as, to iodize a plate for photography. R. Hunt.

iodized salt (?), n. Table salt to which an inorganic iodide compound has been added as a nutritional supplement to prevent goiter.
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Iodizer (?), n. One who, or that which, iodizes.

{ Iodo- (?), Iod- (?). } (Chem.) A prefix, or combining from, indicating iodine as an ingredient; as, iodoform.
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iodocompound n. (Chem.) a compound containing the covalent iodine radical.
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Iodocresol (?), n. [Iodo- + cresol.] (Org. Chem.) Any of several isomeric iodine derivatives of the cresols, C6H3I(CH3)OH, esp. one, an odorless amorphous powder, used in medicine as a substitute for iodoform.
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Iodoform (?), n. [Iodo- + formyl. See , and cf. .] (Chem.) A yellow, crystalline, volatile substance, CI3H, having an offensive odor and sweetish taste, and analogous to chloroform. It is used in medicine as a healing and antiseptic dressing for wounds and sores.
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Iodoformogen (?), n. [Iodoform + -gen root of gignesqai to be born.] (Pharm.) A light powder used as a substitute for iodoform. It is a compound of iodoform and albumin.
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Iodol (?), n. [Iodo- + pyrrol.] (Chem.) A crystallized substance of the composition C4I4NH, technically tetra-iodo-pyrrol, used like iodoform.
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Iodoquinine (?), n. [Iodo- + quinine.] (Chem.) A iodide of quinine obtained as a brown substance,. It is the base of herapathite. See .
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Iodothyrin (?), n. [Iodo- + thyro- + -in.] (Physiol. Chem.) A peculiar substance obtained from the thyroid gland, containing from nine to ten per cent of iodine.

☞ It is a very stable compound, and is believed to be active principle in thyroid extracts and in the internal secretion of the thyroid gland. It was originally called thyroiodin.
[Webster Suppl.]

☞ It is probably an impure extract of thyroid gland, containing thyroxine. See Merck Index 11th Ed. #9345, the entry for thyroidin.
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Iodous (?), a. (Chem.) Pertaining to, or containing, iodine. See (chemical suffix).
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Coloq. Iodous acid , a hypothetical acid, analogous to chlorous acid.
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Ioduret (?), n. (Chem.) Iodide. [Obs.]
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Iodyrite (?), n. [From .] (Min.) Silver iodide, a mineral of a yellowish color.
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Iolite (ī�līt), n. [Gr. 'ion a violet + -lite.] (Min.) A silicate of alumina, iron, and magnesia, having a bright blue color and vitreous luster; cordierite. It is remarkable for its dichroism, and is also called dichroite. A variety called Caribbean iolite has a lighter blue color.
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Io moth (?; 115). (Zoöl.) A large and handsome American moth (Hyperchiria Io), having a large, bright-colored spot on each hind wing, resembling the spots on the tail of a peacock. The larva is covered with prickly hairs, which sting like nettles.
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-ion (?; 106). [L. -io, acc. -ionem: cf. F. -ion.] A noun suffix denoting act, process, result of an act or a process, thing acted upon, state, or condition; as, revolution, the act or process of revolving; construction, the act or process of constructing; a thing constructed; dominion, territory ruled over; subjection, state of being subject; dejection; abstraction.
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Ion (īŏn), n. [Gr. 'ion, neut, of 'iwn, p. pr. of 'ienai to go.] 1. (Elec. Chem.) an atom or goup of atoms (radical) carrying an electrical charge. It is contrasted with neutral atoms or molecules, and free radicals. Certain compounds, such as sodium chloride, are composed of complementary ions in the solid (crystalline) as well as in solution. Others, notably acids such as hydrogen chloride, may occur as neutral molecules in the pure liquid or gas forms, and ionize almost completely in dilute aqueous solutions. In solutions (as in water) ions are frequently bound non-covalently with the molecules of solvent, and in that case are said to be solvated. According to the electrolytic dissociation theory, the molecules of electrolytes are divided into ions by water and other solvents. An ion consists of one or more atoms and carries one unit charges of electricity, 3.4 x 10-10 electrostatic units, or a multiple of this. Those which are positively electrified (hydrogen and the metals) are called cations; negative ions (hydroxyl and acidic atoms or groups) are called anions. Thus, hydrochloric acid (HCl) dissociates, in aqueous solution, into the hydrogen ion, H+, and the chlorine ion, Cl-; ferric nitrate, Fe(NO3)3, yields the ferric ion, Fe+++, and nitrate ions, NO3-, NO3-, NO3-. When a solution containing ions is made part of an electric circuit, the cations move toward the cathode, the anions toward the anode. This movement is called migration, and the velocity of it differs for different kinds of ions. If the electromotive force is sufficient, electrolysis ensues: cations give up their charge at the cathode and separate in metallic form or decompose water, forming hydrogen and alkali; similarly, at the anode the element of the anion separates, or the metal of the anode is dissolved, or decomposition occurs. Aluminum and chlorine are elements prepared predominantly by such electrolysis, and depends on dissolving compounds in a solvent where the element forms ions. Electrolysis is also used in refining other metals, such as copper and silver. Cf. , .
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2. One of the small electrified particles into which the molecules of a gas are broken up under the action of the electric current, of ultraviolet and certain other rays, and of high temperatures. To the properties and behavior of ions the phenomena of the electric discharge through rarefied gases and many other important effects are ascribed. At low pressures the negative ions appear to be electrons; the positive ions, atoms minus an electron. At ordinary pressures each ion seems to include also a number of attached molecules. Ions may be formed in a gas in various ways.
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ionate v. t. (chemistry) to add ions.
Syn. -- .
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Ionia n. A region of Western Asia Minor colonized by the Ancient Greeks.
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Ionian (?), a. [L. Ionius. See .] Of or pertaining to Ionia or the Ionians; Ionic. -- n. A native or citizen of Ionia.
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Ionic (?), a. [L. Ionicus, Gr. �, fr. � Ionia.]
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1. Of or pertaining to Ionia or the Ionians.
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2. (Arch.) Pertaining to the Ionic order of architecture, one of the three orders invented by the Greeks, and one of the five recognized by the Italian writers of the sixteenth century. Its distinguishing feature is a capital with spiral volutes. See Illust. of .
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Coloq. Ionic dialect (Gr. Gram.), a dialect of the Greek language, used in Ionia. The Homeric poems are written in what is designated old Ionic, as distinguished from new Ionic, or Attic, the dialect of all cultivated Greeks in the period of Athenian prosperity and glory. -- Coloq. Ionic foot . (Pros.) See , n., 1. -- Coloq. Ionic mode , or Coloq. Ionian mode , (Mus.), an ancient mode, supposed to correspond with the modern major scale of C. -- Coloq. Ionic sect , a sect of philosophers founded by Thales of Miletus, in Ionia. Their distinguishing tenet was, that water is the original principle of all things. -- Coloq. Ionic type , a kind of heavy-faced type (as that of the following line).
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☞This is Nonpareil Ionic.

Ionic, n. 1. (Pros.) (a) A foot consisting of four syllables: either two long and two short, -- that is, a spondee and a pyrrhic, in which case it is called the greater Ionic; or two short and two long, -- that is, a pyrrhic and a spondee, in which case it is called the smaller Ionic. (b) A verse or meter composed or consisting of Ionic feet.
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2. The Ionic dialect; as, the Homeric Ionic.
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3. (Print.) Ionic type.
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ionic a. (Chem.) Of or pertaining to ions; composed of ions, containing ions, or breaking down into ions when dissolved in a polar solvent; as, an ionic solution will conduct a current of electricity. Opposite of nonionic.
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Ionidium (?), n. [NL. Cf. .] (Bot.) A genus of violaceous plants, chiefly found in tropical America, some species of which are used as substitutes for ipecacuanha.
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Ionization (?), n. (Elec. Chem.) the process of converting neutral atoms or molecules into ions. The process may occur by dissolving an ionic substance in a dissociating solvent, such as water, or by adding or subtracting an electron to or from an atom or molecule. The latter process occurs, for example, in an electron beam in a mass spectrometer and by interaction of substances with .
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ionize v. i. 1. (Physics, Chemistry) to dissociate into ions, as by dissolution in water or another polar solvent.
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ionize (?), v. t. [imp. & p. p. Ionized (?); p. pr. & vb. n. Ionizing (?).] (Physics, Chemistry) To convert (an atom or molecule) into ions, e. g. by dissolving in water, by reaction with acid or alkali, or by interaction with ionizing radiation. See .
[Webster Suppl. +PJC]

ionized adj. converted totally or partly into ions. Opposite of nonionized and unionized.
[WordNet 1.5]

ionizing radiation n. rays of rapidly moving subatomic particles, x-reys, or gamma rays, sufficiently energetic to cause ionization when absorbed by matter. Such radiation is emitted by radioactive elements, or may be generated by highly energetic physical processes, as in stars. When absorbed by living tissue, ionizing radiation can cause mutation, cellular damage, or death.
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ionophore n. [ion + -phore] (Biochemistry) A compound that enhances transport of ions across cellular membranes, by binding them and carrying them across. As a class ionophores tend to be lipophilic in nature; each compound is usually specific for one or a small number of ions.
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ionosphere n. the outer region of the earth's atmosphere, beyond which is the exosphere; it contains a high concentration of free electrons and ions, and extends from about 50 miles to about 250 miles above the earth's surface, but the height shows daily and seasonal variation, and the composition of the particles in the ionosphere is also affected by events such as solar flares.
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Ioqua shell (?). [From the native name.] (Zoöl.) The shell of a large Dentalium (Dentalium pretiosum), formerly used as shell money, and for ornaments, by the Indians of the west coast of North America.
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Iota (?), n. [L., fr. Gr. 'iw^ta. See .]
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1. The ninth letter of the Greek alphabet (ι) corresponding with the English i.
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2. [from iota being the smallest letter in the Greek alphabet.] A very small quantity or degree; a jot; a particle.
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They never depart an iota from the authentic formulas of tyranny and usurpation. Burke.
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Coloq. Iota subscript (Gr. Gram.), iota written beneath a preceding vowel, as a,, h,, w,, -- done when iota is silent.
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Iotacism (�ōtȧsĭz'm), n. [Gr. 'iotakismos a laying too much stress upon the iota (ι): cf. F. iotacisme. See .] The frequent use of the sound of iota (that of English e in be), as among the modern Greeks; also, confusion from sounding ε, ι, η, υ, ει, etc., like ι. Littré.
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I O U, I.O.U (ī ō ū). [phonetic, from I owe you.] A paper having on it these letters, with a sum named, and duly signed; -- in use in England as an acknowledgment of a debt, and taken as evidence thereof, but not amounting to a promissory note; a due bill. Wharton. Story.
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Iowas (?), n. pl.; sing. Iowa. (Ethnol.) A tribe of Indians which formerly occupied the region now included in the State of Iowa.
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Ipecac (ĭp�kăk), n. An abbreviation of , and in more frequent use.
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Ipecacuanha (ĭp�kăk�ănȧ), n. [Pg. ipecacuanha (cf. Sp. ipecacuana); fr. Braz. ipe-kaa-guena, prop., a creeping plant that causes vomiting.] (Med. & Bot.) The root of a Brazilian rubiaceous herb (Cephaëlis Ipecacuanha), largely employed as an emetic; also, the plant itself; also, a medicinal extract of the root. Many other plants are used as a substitutes; among them are the black or Peruvian ipecac (Psychotria emetica), the white ipecac (Ionidium Ipecacuanha), the bastard or wild ipecac (Asclepias Curassavica), and the undulated ipecac (Richardsonia scabra).
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Ipocras (?), n. Hippocras. [Obs.] Chaucer.
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Ipomœa (ĭp�mēȧ), n. [NL. “Named, according to Linnæus, from Gr. 'ips, 'ipos, a bindweed [which it is not], and omoios like.” Gray.] (Bot.) A genus of twining plants with showy monopetalous flowers, including the morning-glory, the sweet potato, and the cypress vine.
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Ipomœic (ĭp�mēĭk), a. (Chem.) Pertaining to, or designating, an acid obtained by the oxidation of convolvulin (obtained from jalap, the tubers of Ipomœa purga), and identical in most of its properties with sebacic acid.
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Ipsus prop. n. a battle between the successors of Alexander the Great (301 BC); Lysimachus and Seleucus defeated Antigonus and Demetrius.
Syn. -- battle of Ipsus.
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IQ, I.Q. n. a measure of a person's intelligence as indicated by an intelligence test; the ratio of a person's mental age to their chronological age (multiplied by 100).
Syn. -- intelligence quotient, IQ.
[WordNet 1.5]

Ir n. (Chem.) The chemical symbol for iridium, a metallic element of the platinum group. It has atomic number 77 and an atomic weight of 192.22.
Syn. -- iridium.
[WordNet 1.5]

Ir- (?). A form of the prefix in-. See .
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IRA n. (Finance) individual retirement account; -- a special type of savings account allowed by law to provide deferred taxation of the interest paid. [U.S., acronym]
Syn. -- individual retirement account.
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IRA n. The Irish Republican Army, a group in Ireland with the primary goal of promoting the unification of Ireland and the severing of the political bond of Northern Ireland with Great Britain, of mostly secret membership, with a militant wing sponsoring terrorist activities such as bombings and the killings of police, British soldiers, and Unionist sympathizers in Northern Ireland. [Acronym]
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Iracund (?), a. [L. iracundus, fr. ira anger.] Irascible; choleric. “Iracund people.” Carlyle.
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Irade (�räd�), n. [Turk.] A decree of the Sultan.
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Iraki n. & adj. same as Iraqi. [R.]
Syn. -- Iraqi.
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Iran (ērän), n. [Mod. Persian Irān. Cf. .] The native name of Persia, the name adopted by the modern nation of Iran.
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Irani n. a native or inhabitant of Iran.
Syn. -- Iranian, Persian.
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Iranian (?), a. Of or pertaining to Iran. -- n. A native of Iran; also, the Iranian or Persian language, a division of the Aryan family of languages, the modern version of which is called Farsi.
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Iranic (?), a. Iranian.
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Iraqi adj. of or relating to Iraq or its people or culture; as, Iraqi oil; Iraqi terrorists.
Syn. -- Iraki.
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Iraqi n. a native or inhabitant of Iraq.
Syn. -- Iraki.
[WordNet 1.5]

Irascibility (?), n. [Cf. F. irascibilité.] The quality or state of being irascible; irritability of temper; irascibleness.
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Irascible (?), a. [L. irascibilis, fr. irasci to be angry, ira anger: cf. F. irascible. See .] Prone to anger; easily provoked or inflamed to anger; choleric; irritable; as, an irascible man; an irascible temper or mood. -- Irascibleness, n. -- Irascibly, adv.
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Irate (?), a. [L. iratus, fr. irasci to be angry. See .] Angry; incensed; enraged. [Recent]
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The irate colonel . . . stood speechless. Thackeray.
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Mr. Jaggers suddenly became most irate. Dickens.
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Ire (?), n. [F., fr. L. ira.] Anger; wrath. [Poet.]

Syn. -- Anger; passion; rage; fury. See .
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Ireful (?), a. Full of ire; angry; wroth. “The ireful bastard Orleans.” Shak. -- Irefully, adv.
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Irefulness, n. Wrathfulness. Wyclif.
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Irenarch (?), n. [L. irenarcha, irenarches, Gr. �; � peace + � to rule.] (Gr. Antiq.) An officer in the Greek empire having functions corresponding to those of a justice of the peace. [Written also eirenarch.]

{ Irenic (?), Irenical (?), } a. [Gr. �.] Fitted or designed to promote peace; pacific; conciliatory; peaceful. Bp. Hall.
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Irenicon (?), n. [NL., from Gr. � peaceful, fr. � peace.] A proposition or device for securing peace, especially in the church. South.
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Irenics (?), n. (Eccl.) That branch of Christian science which treats of the methods of securing unity among Christians or harmony and union among the churches; -- called also Irenical theology. Schaff-Herzog.
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Irestone (?), n. (Mining) Any very hard rock.
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Irian (?), a. Of or pertaining to the iris. “Irian nerves.” Dunglison.
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Iricism (?), n. Irishism. [R.] Jeffrey.

{ Iridaceous (?), Irideous (?), } a. [From NL. Iris, Iridis, the Iris.] (Bot.) Pertaining to, or resembling, a large natural order of endogenous plants (Iridaceæ), which includes the genera Iris, Ixia, Crocus, Gladiolus, and many others.
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Iridal (?; 277), a. [L. iris, iridis, rainbow. See .] Of or pertaining to the iris or rainbow; prismatic; as, the iridal colors. Whewell.
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Iridectomy (?), n. [Gr. �, �, iris + � cutting out; � out + temnein to cut.] (Surg.) The act or process of cutting out a portion of the iris in order to form an artificial pupil.
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Iridescence (?), n. [See .] Exhibition of colors like those of the rainbow, especially a surface reflection which changes color with the angle at which the object is viewed; the quality or state of being iridescent; a prismatic play of color; as, the iridescence of mother-of-pearl. It is due to interference of light waves reflected from the front and back surfaces of a thin layer transpatrent or semitransparent film.
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Iridescent (?; 277), a. [L. iris, iridis, the rainbow: cf. F. iridescent.] Having colors like the rainbow; exhibiting a play of changeable colors; nacreous; prismatic; as, iridescent glass. See .
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Iridian (?), a. Of or pertaining to the iris or rainbow.
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Iridiated (?), a. Iridescent.
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Iridic (?), a. Of or pertaining to the iris of the eye.
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Iridic, a. (Chem.) Of or pertaining to iridium; -- said specifically of those compounds in which iridium has a relatively high valence.
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Iridioscope (?), n. [See , and .] A kind of ophthalmoscope.
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Iridious (�rĭdĭŭs), a. (Chem.) Of or pertaining to iridium; -- applied specifically to compounds in which iridium has a low valence.
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