Plethysmography - Plot

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Plethysmography (?), n. (Physiol.) The study, by means of the plethysmograph, of the variations in size of a limb, and hence of its blood supply.
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Pleura (?), n., pl. of .
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Pleura, n.; pl. L. Pleuræ (#), E. Pleuras (#). [NL., n. fem., fr. Gr. � a rib, the side.] 1. (Anat.) (a) The smooth serous membrane which closely covers the lungs and the adjacent surfaces of the thorax; the pleural membrane. (b) The closed sac formed by the pleural membrane about each lung, or the fold of membrane connecting each lung with the body wall.
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2. (Zoöl.) Same as .
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Pleural (?), a. (Anat.) Of or pertaining to the pleura or pleuræ, or to the sides of the thorax.
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Pleuralgia (?), n. [NL., fr. Gr. � rib + � pain.] (Med.) Pain in the side or region of the ribs.
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Pleurapophysis (?), n.; pl. Pleurapophyses (#). [NL. See , and .] (Anat.) One of the ventral processes of a vertebra, or the dorsal element in each half of a hemal arch, forming, or corresponding to, a vertebral rib. -- Pleurapophysial (#), a. Owen.
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Pleurenchyma (?), n. [Gr. � side + �, as in parenchyma.] (Bot.) A tissue consisting of long and slender tubular cells, of which wood is mainly composed.
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Pleuric (?), a. (Anat.) Pleural.
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Pleurisy (?), n. [F. pleurésie, L. pleurisis, pleuritis, Gr pleyri^tis (sc. nosos), fr. pleyra rib, side.] (Med.) An inflammation of the pleura, usually accompanied with fever, pain, difficult respiration, and cough, and with exudation into the pleural cavity.
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Coloq. Pleurisy root . (Bot.) (a) The large tuberous root of a kind of milkweed (Asclepias tuberosa) which is used as a remedy for pleuritic and other diseases. (b) The plant itself, which has deep orange-colored flowers; -- called also butterfly weed.
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Pleurite (?), n. (Zoöl.) Same as .
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{ Pleuritic (?), Pleuritical (?), } a. [L. pleuriticus, Gr. �: cf. F. pleurétique.] (Med.) (a) Of or pertaining to pleurisy; as, pleuritic symptoms. (b) Suffering from pleurisy.
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Pleuritis (?), n. [L.] (Med.) Pleurisy.
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Pleuro- (?). [See .] A combining form denoting relation to a side; specif., connection with, or situation in or near, the pleura; as, pleuroperitoneum.
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Pleurobrachia (?), n. [NL. See , and .] (Zoöl.) A genus of ctenophores having an ovate body and two long plumose tentacles.
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Pleurobranch (?), n. [See , and .] (Zoöl.) Any one of the gills of a crustacean that is attached to the side of the thorax.
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Pleurobranchia (?), n.; pl. Pleuroeranchiæ (#). [NL.] (Zoöl.) Same as .
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Pleurocarp (?), n. [Pleuro- + Gr. � fruit.] (Bot.) Any pleurocarpic moss.
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{ Pleurocarpic (?), Pleurocarpous (?), } a. (Bot.) Side-fruited; -- said of those true mosses in which the pedicels or the capsules are from lateral archegonia; -- opposed to acrocarpous.
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Pleurocentrum (?), n. [NL. see , and .] (Anat.) One of the lateral elements in the centra of the vertebræ in some fossil batrachians.
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Pleuroderes (?), n. pl. [NL., fr. Gr. � the side + � the neck.] (Zoöl.) A group of fresh-water turtles in which the neck can not be retracted, but is bent to one side, for protection. The matamata is an example.
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Pleurodont (?), a. [Pleuro- + Gr. �, �, a tooth.] (Anat.) Having the teeth consolidated with the inner edge of the jaw, as in some lizards.
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Pleurodont, n. (Zoöl.) Any lizard having pleurodont teeth.
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Pleurodynia (?), n. [NL., fr. Gr. � side + � pain.] (Med.) A painful affection of the side, simulating pleurisy, usually due to rheumatism.
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Pleuron (?), n.; pl. Pleura (#). [NL., fr. Gr. � a rib.] (Zoöl.) (a) One of the sides of an animal. (b) One of the lateral pieces of a somite of an insect. (c) One of lateral processes of a somite of a crustacean.
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Pleuronectoid (?), a. [NL. Pleuronectes, name of a genus (fr. Gr. � rib + � a swimmer) + -oid.] (Zoöl.) Pertaining to the Pleuronectidæ, or Flounder family.
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Pleuropericardial (?), a. (Anat.) Of or pertaining to the pleura and pericardium.
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Pleuroperipneumony (?), n. [Pleuro- + peripneumony.] (Med.) Pleuropneumonia.
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Pleuroperitoneal (?), a. (Anat.) Of or pertaining to the pleural and peritoneal membranes or cavities, or to the pleuroperitoneum.
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Pleuroperitoneum (?), n. [Pleuro- + peritoneum.] (Anat.) The pleural and peritoneal membranes, or the membrane lining the body cavity and covering the surface of the inclosed viscera; the peritoneum; -- used especially in the case of those animals in which the body cavity is not divided.
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☞ Peritoneum is now often used in the sense of pleuroperitoneum, the pleuræ being regarded as a part of the peritoneum, when the body cavity is undivided.
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Pleuropneumonia (?), n. [Pleuro- + pneumonia.] (Med.) Inflammation of the pleura and lungs; a combination of pleurisy and pneumonia, esp. a kind of contagions and fatal lung plague of cattle.
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Pleuroptera (?), n. pl [NL., fr. Gr. � side + � wing.] (Zoöl.) A group of Isectivora, including the colugo.
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Pleurosigma (?), n. [NL. See , and .] (Bot.) A genus of diatoms of elongated elliptical shape, but having the sides slightly curved in the form of a letter S. Pleurosigma angulatum has very fine striations, and is a favorite object for testing the high powers of microscopes.
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Pleurosteon (?), n.; pl. L. Pleurostea (#), E. -ons (#). [NL., fr. Gr. � a rib + � a bone.] (Anat.) The antero-lateral piece which articulates the sternum of birds.
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Pleurothotonus (?), n. [NL., fr. Gr. pleyroqen from the side + tonos a stretching.] (Med.) A species of tetanus, in which the body is curved laterally. Quain. Dunglison.
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Pleurotoma (?), n.; pl. L. Pleurotomæ (#), E. Pleurotomas (#). [NL., fr. Gr. � the side + tomh a cut.] (Zoöl.) Any marine gastropod belonging to Pleurotoma, and ether allied genera of the family Pleurotmidæ. The species are very numerous, especially in tropical seas. The outer lip has usually a posterior notch or slit.
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Plevin (?), n. [OF. plevine. See .] A warrant or assurance. [Obs.]
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Plexiform (?), a. [Plexus + -form: cf. F. Plexiforme.] Like network; complicated. Quincy.
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Pleximeter (?), n. [Gr. � stroke, percussion (from � to strike) + -meter.] (Med.) A small, hard, elastic plate, as of ivory, bone, or rubber, placed in contact with body to receive the blow, in examination by mediate percussion. [Written also plexometer.]
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Plexure (?), n. [See .] The act or process of weaving together, or interweaving; that which is woven together. H. Brooke.
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Plexus (?), n.; pl. L. Plexus, E. Plexuses (#). [L., a twining, braid, fr. plectere, plexum, to twine, braid.] 1. (Anat.) A network of vessels, nerves, or fibers.
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2. (Math.) The system of equations required for the complete expression of the relations which exist between a set of quantities. Brande & C.
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3. A network; an intricate or interwoven combination of elements or parts in a coherent structure.

In the perception of a tree the reference to an object is circumscribed and directed by a plexus of visual and other presentations. G. F. Stout.
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Pley (?), v. & n. See . [Obs.] Chaucer.
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Pley (?), a. Full See . [Obs.] Chaucer.
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Pleyt (?), n. (Naut.) An old term for a river boat.
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Pliability (?), n. The quality or state of being pliable; flexibility; as, pliability of disposition. “Pliability of movement.” Sir W. Scott.
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Pliable (?), a. [F., fr. plier to bend, to fold. See , v.] 1. Capable of being plied, turned, or bent; easy to be bent; flexible; pliant; supple; limber; yielding; as, willow is a pliable plant.
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2. Flexible in disposition; readily yielding to influence, arguments, persuasion, or discipline; easy to be persuaded; -- sometimes in a bad sense; as, a pliable youth. “Pliable she promised to be.” Dr. H. More.
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-- Pliableness, n. -- Pliably, adv.
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Pliancy (?), n. The quality or state of being pliant in sense; as, the pliancy of a rod. “Avaunt all specious pliancy of mind.” Wordsworth.
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Pliant (?), a. [F. pliant, p. pr. of plier to bend. See , v.] 1. Capable of plying or bending; readily yielding to force or pressure without breaking; flexible; pliable; lithe; limber; plastic; as, a pliant thread; pliant wax. Also used figuratively: Easily influenced for good or evil; tractable; as, a pliant heart.
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The will was then ductile and pliant to right reason. South.
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2. Favorable to pliancy. [R.] “A pliant hour.” Shak. -- Pliantly, adv. -- Pliantness, n.
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Plica (?), n. [LL., a fold, fr. L. plicare to fold. See , v.] 1. (Med.) A disease of the hair (Plica polonica), in which it becomes twisted and matted together. The disease is of Polish origin, and is hence called also Polish plait. Dunglison.
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2. (Bot.) A diseased state in plants in which there is an excessive development of small entangled twigs, instead of ordinary branches.
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3. (Zoöl.) The bend of the wing of a bird.
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{ Plicate (?), Plicated (?), } a. [L. plicatus, p. p. of plicare to fold.] Plaited; folded like a fan; as, a plicate leaf. -- Plicately (#), adv.
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Plication (?), n. A folding or fold; a plait. Richardson.
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Plicature (?), n. [L. plicatura, fr. plicare to fold.] A fold; a doubling; a plication. Dr. H. More.
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Plicidentine (?), n. [LL. plica fold + E. dentine.] (Anat.) A form of dentine which shows sinuous lines of structure in a transverse section of the tooth.
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Plied (?), imp. & p. p. of .
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Pliers (?), n. pl. [From to bend, fold.] A kind of small pinchers with long jaws, -- used for bending or cutting metal rods or wire, for handling small objects such as the parts of a watch, etc.
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Pliform (?), a. [Ply a fold + -form.] In the form of a ply, fold, or doubling. [Obs.] Pennant.
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Plight (?), obs. imp. & p. p. of , to pledge. Chaucer.
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Plight, obs. imp. & p. p. of . Chaucer.
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Plight, v. t. [OE. pliten; probably through Old French, fr. LL. plectare, L. plectere. See , .] To weave; to braid; to fold; to plait.[Obs.] “To sew and plight.” Chaucer.
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A plighted garment of divers colors. Milton.
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Plight (?), n. A network; a plait; a fold; rarely a garment. [Obs.] “Many a folded plight.” Spenser.
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Plight, n. [OE. pliht danger, engagement, AS. pliht danger, fr. pleón to risk; akin to D. plicht duty, G. pflicht, Dan. pligt. √28. Cf. .] 1. That which is exposed to risk; that which is plighted or pledged; security; a gage; a pledge. “That lord whose hand must take my plight.” Shak.
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2. [Perh. the same word as plight a pledge, but at least influenced by OF. plite, pliste, ploit, ploi, a condition, state; cf. E. plight to fold, and F. pli a fold, habit, plier to fold, E. ply.] Condition; state; -- risk, or exposure to danger, often being implied; as, a luckless plight. “Your plight is pitied.” Shak.
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To bring our craft all in another plight Chaucer.
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Plight, v. t. [imp. & p. p. Plighted; p. pr. & vb. n. Plighting.] [AS. plihtan to expose to danger, pliht danger;cf. D. verplichten to oblige, engage, impose a duty, G. verpflichten, Sw. förplikta, Dan. forpligte. See , n.] 1. To pledge; to give as a pledge for the performance of some act; as, to plight faith, honor, word; -- never applied to property or goods. “ To do them plighte their troth.” Piers Plowman.
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He plighted his right hand
Unto another love, and to another land. Spenser.
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Here my inviolable faith I plight. Dryden.
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2. To promise; to engage; to betroth.
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Before its setting hour, divide
The bridegroom from the plighted bride. Sir W. Scott.
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Plighter (?), n. One who, or that which, plights.
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Plim (?), v. i. [Cf. .] To swell, as grain or wood with water. [Prov. Eng.] Grose.
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Plimsoll's mark (?). (Naut.) A mark conspicuously painted on the port side of all British sea-going merchant vessels, to indicate the limit of submergence allowed by law; -- so called from Samuel Plimsoll, by whose efforts the act of Parliament to prevent overloading was procured.
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Plinth (?), n. [L. plinthus, Gr. � a brick or tile, a plinth, perh. akin to E. flint: cf. F. plinthe.] (Arch.) In classical architecture, a vertically faced member immediately below the circular base of a column; also, the lowest member of a pedestal; hence, in general, the lowest member of a base; a sub-base; a block upon which the moldings of an architrave or trim are stopped at the bottom. See Illust. of .
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Pliocene (?), a. [Written also pleiocene.] [Gr. � more + � new, recent.] (Geol.) Of, pertaining to, or characterizing, the most recent division of the Tertiary age.
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Pliocene, n. (Geol.) The Pliocene period or deposits.
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Pliohippus (?), n. [NL., fr. E. pliocene + Gr. � horse.] (Paleon.) An extinct genus of horses from the Pliocene deposits. Each foot had a single toe (or hoof), as in the common horse.
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Pliosaurus (?), n. [NL., from Gr. � greater + � lizard.] (Paleon.) An extinct genus of marine reptiles allied to Plesiosaurus, but having a much shorter neck.
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Plitt (?), n. [Russ. plete.] An instrument of punishment or torture resembling the knout, used in Russia.
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Ploc (?), n. [F.] (Naut.) A mixture of hair and tar for covering the bottom of a ship.
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Ploce (?), n. [L., fr. Gr. � complication, fr. � to entwine.] (Rhet.) A figure in which a word is separated or repeated by way of emphasis, so as not only to signify the individual thing denoted by it, but also its peculiar attribute or quality; as, “His wife's a wife indeed.” Bailey.
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Plod (?), v. i. [imp. & p. p. Plodded (?); p. pr. & vb. n. Plodding.] [Gf. Gael. plod a clod, a pool; also, to strike or pelt with a clod or clods.] 1. To travel slowly but steadily; to trudge. Shak.
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2. To toil; to drudge; especially, to study laboriously and patiently. “Plodding schoolmen.” Drayton.
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Plod, v. t. To walk on slowly or heavily.
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The ploughman homeward plods his weary way. Gray.
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Plodder (?), n. One who plods; a drudge.
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Plodding (?), a. Progressing in a slow, toilsome manner; characterized by laborious diligence; as, a plodding peddler; a plodding student; a man of plodding habits. --Ploddingly, adv.
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Plonge (?), v. t. [See .] To cleanse, as open drains which are entered by the tide, by stirring up the sediment when the tide ebbs.
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Plongée (?), n. [F. See .] (Mil.) A slope or sloping toward the front; as, the plongée of a parapet; the plongée of a shell in its course. [Sometimes written plonge.]
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Plop (?), v. i. [imp. & p. p. Plopped (?); p. pr. & vb. n. Plopping.] [Imitative.] To fall, drop, or move in any way, with a sudden splash or slap, as on the surface of water.

The body plopped up, turning on its side. Kipling.
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Plop, n. Act of plopping; the sound made in plopping.
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Plot (?), n. [AS. plot; cf. Goth. plats a patch. Cf. a piece of ground.] 1. A small extent of ground; a plat; as, a garden plot. Shak.
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2. A plantation laid out. [Obs.] Sir P. Sidney.
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3. (Surv.) A plan or draught of a field, farm, estate, etc., drawn to a scale.
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Plot, v. t. [imp. & p. p. Plotted (?); p. pr. & vb. n. Plotting.] To make a plot, map, pr plan, of; to mark the position of on a plan; to delineate.
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This treatise plotteth down Cornwall as it now standeth. Carew.
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Plot, n. [Abbrev. from complot.] 1. Any scheme, stratagem, secret design, or plan, of a complicated nature, adapted to the accomplishment of some purpose, usually a treacherous and mischievous one; a conspiracy; an intrigue; as, the Rye-house Plot.
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I have overheard a plot of death. Shak.
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O, think what anxious moments pass between
The birth of plots and their last fatal periods! Addison.
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2. A share in such a plot or scheme; a participation in any stratagem or conspiracy. [Obs.]
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And when Christ saith, Who marries the divorced commits adultery, it is to be understood, if he had any plot in the divorce. Milton.
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3. Contrivance; deep reach of thought; ability to plot or intrigue. [Obs.] “A man of much plot.” Denham.
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4. A plan; a purpose. “No other plot in their religion but serve God and save their souls.” Jer. Taylor.
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5. In fiction, the story of a play, novel, romance, or poem, comprising a complication of incidents which are gradually unfolded, sometimes by unexpected means.
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If the plot or intrigue must be natural, and such as springs from the subject, then the winding up of the plot must be a probable consequence of all that went before. Pope.
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Syn. -- Intrigue; stratagem; conspiracy; cabal; combination; contrivance.
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