Chapter 1178

Pol`y*chro"mate , n. [See Polychromatic .] (Chem.) A compound which exhibits, or from which may be prepared, a variety of colors, as certain solutions derived from vegetables, which display colors by fluorescence.

Polychromatic <Xpage=109>

Pol`y*chro*mat"ic (?) , a. [ Poly- + chromatic .] Showing a variety, or a change, of colors.

Polychromatic acid (Old Chem.) , a substance obtained by the action of nitric acid on aloes.

Polychrome <Xpage=109>

Pol"y*chrome (?) , n. [ Poly- + Gr. <?/ color.] (Chem.) Esculin; -- so called in allusion to its fluorescent solutions. [R.]

Polychrome <Xpage=109>

Pol"y*chrome , a. [Cf. F. polychrome .] Executed in the manner of polychromy; as, polychrome printing .

Polychromic <Xpage=109>

Pol`y*chro"mic (?) , a. [ Poly- + (sense 1) Gr. <?/, or (sense 2) chromic .] 1. Polychromatic.

2. (Chem.) Pertaining to, or designating, any one of several acids (known only in their salts) which contain more than one atom of chromium.

Polychromous <Xpage=109>

Pol`y*chro"mous (?) , a. Of or pertaining to polychromy; many-colored; polychromatic.

Polychromy <Xpage=109>

Pol"y*chro`my (?) , n. [ Poly- + Gr. <?/ color.] (Anc. Art) The art or practice of combining different colors, especially brilliant ones, in an artistic way.

Polychronious <Xpage=109>

Pol`y*chro"ni*ous (?) , a. [ Poly- + Gr. <?/ for a long time, <?/ time.] Enduring through a long time; chronic.

Polyclinic <Xpage=109>

Pol`y*clin"ic (?) , n. [ Poly- + clinic .] (Med.) A clinic in which diseases of many sorts are treated; especially, an institution in which clinical instruction is given in all kinds of disease.

Polyconic <Xpage=109>

Pol`y*con"ic (?) , a. [ Poly- + conic .] Pertaining to, or based upon, many cones.

Polyconic projection (Map Making) , a projection of the earth's surface, or any portion thereof, by which each narrow zone is projected upon a conical surface that touches the sphere along this zone, the conical surface being then unrolled. This projection differs from conic projection in that latter assumes but one cone for the whole map. Polyconic projection is that in use in the United States coast and geodetic survey.

Polycotyledon <Xpage=109>

Pol`y*cot`y*le"don (?) , n. [ Poly- + cotyledon : cf. F. polycotyl\'82done .] (Bot.) A plant that has many, or more than two, cotyledons in the seed. -- Pol`y*cot`y*led"on*ous (#) , a.

Polycotyledonary <Xpage=109>

Pol`y*cot`y*led"on*a*ry (?) , a. [ Poly- + cotyledonary .] (Anat.) Having the villi of the placenta collected into definite patches, or cotyledons.

Polycracy <Xpage=109>

Po*lyc"ra*cy (?) , n. [ Poly- + -cracy , as in democracy .] Government by many rulers; polyarchy.

<page="10"> Page 10

Polycrotic <Xpage=10>

Pol`y*crot"ic (?) , a. [ Poly- + Gr. <?/ to beat.] (Physiol.) Of or pertaining to polycrotism; manifesting polycrotism; as, a polycrotic pulse; a polycrotic pulse curve.

Polycrotism <Xpage=10>

Po*lyc"ro*tism (?) , n. (Physiol.) That state or condition of the pulse in which the pulse curve, or sphygmogram, shows several secondary crests or elevations; -- contrasted with monocrotism and dicrotism .

Polycystid <Xpage=10>

Pol`y*cys"tid (?) , n. (Zo\'94l.) (a) One of the Polycystidea. (b) One of the Polycystina. -- a. Pertaining to the Polycystidea, or the Polycystina.

Polycystidea <Xpage=10>

Pol`y*cys*tid"e*a (?) , n. pl. [NL. See Poly- , and Cystidea .] (Zo\'94l.) A division of Gregarin\'91 including those that have two or more internal divisions of the body.

Polycystina <Xpage=10>

Pol`y*cys*ti"na (?) , n. pl. [NL. See Poly- , and Cyst .] (Zo\'94l.) A division of Radiolaria including numerous minute marine species. The skeleton is composed of silica, and is often very elegant in form and sculpture. Many have been found in the fossil state.

Polycystine <Xpage=10>

Pol`y*cys"tine (?) , a. (Zo\'94l.) Pertaining to the Polycystina. -- n. One of the Polycystina.

<-- 2. a homopolymer of the amino acid cystine. -->

Polycyttaria <Xpage=10>

Pol`y*cyt*ta"ri*a (?) , n. pl. [NL., fr. Gr. <?/ many + <?/, dim. fr. <?/ a hollow vessel.] (Zo\'94l.) A division of Radiolaria. It includes those having one more central capsules.

<-- polydactyl. = polydactylous. having more that the normal number of digits; e.g. a polydactylous cat may have six or more toes on its paw. -->

Polydactylism <Xpage=10>

Pol`y*dac"tyl*ism (?) , n. [ Poly- + Gr. <?/ finger: cf. F. polydactylisme .] (Anat.) The possession of more that the normal number of digits. <-- also polydactyly. -->

Polydipsia <Xpage=10>

Pol`y*dip"si*a (?) , n. [NL., fr. Gr. <?/ much + <?/ thirst.] (Med.) Excessive and constant thirst occasioned by disease.

Polyedron <Xpage=10>

Pol`y*e"dron (?) , n. See Polyhedron .

Polyedrous <Xpage=10>

Pol`y*e"drous (?) , a. See Polyhedral .

Polyeidic <Xpage=10>

Pol`y*ei"dic (?) , a. [ Poly- + Gr. <?/ form.] (Zo\'94l.) Passing through several distinct larval forms; -- having several distinct kinds of young.

Polyeidism <Xpage=10>

Pol`y*ei"dism (?) , n. (Zo\'94l.) The quality or state of being polyeidic.

Polyembryonate <Xpage=10>

Pol`y*em"bry*o*nate (?) , a. [ Poly- + embryonate .] (Bot.) Consisting of, or having, several embryos; polyembryonic.

Polyembryonic <Xpage=10>

Pol`y*em`bry*on"ic (?) , a. [ Poly- + embryonic .] (Bot.) Polyembryonate.

Polyembryony <Xpage=10>

Pol`y*em"bry*o*ny (?) , n. [See Poly- , and Embryo .] (Bot.) The production of two or more embryos in one seed, due either to the existence and fertilization of more than one embryonic sac or to the origination of embryos outside of the embryonic sac.

Polyfoil <Xpage=10>

Pol"y*foil (?) , n. [ Poly- + foil , n.] (Arch.) Same as Multifoil .

Polygala <Xpage=10>

Po*lyg"a*la (?) , n. [L., milkwort, fr. Gr. <?/; <?/ much + <?/ milk.] A genus of bitter herbs or shrubs having eight stamens and a two-celled ovary (as the Seneca snakeroot, the flowering wintergreen, etc.); milkwort.

Polygalaceous <Xpage=10>

Pol`y*ga*la"ceous (?) , a. Of or pertaining to a natural order of plants ( Polygalace\'91 ) of which Polygala is the type.

Polygalic <Xpage=10>

Po*lyg"a*lic (?) , a. (Chem.) Of, pertaining to, or obtained from, Polygala; specifically, designating an acrid glucoside (called polygalic acid , senegin , etc.), resembling, or possibly identical with, saponin .

Polygamia <Xpage=10>

Pol`y*ga"mi*a (?) , n. pl. [NL. See Polygamous .] (Bot.) (a) A Linn\'91an class of plants, characterized by having both hermaphrodite and unisexual flowers on the same plant. (b) A name given by Linn\'91us to file orders of plants having syngenesious flowers.

Polygamian <Xpage=10>

Pol`y*ga"mi*an (?) , a. (Bot.) Polygamous.

Polygamist <Xpage=10>

Po*lyg"a*mist (?) , n. [Cf. F. polygamiste , polygame , Gr. <?/, a. ] One who practices polygamy, or maintains its lawfulness.

Polygamize <Xpage=10>

Po*lyg"a*mize (?) , v. i. To practice polygamy; to marry several wives.

Sylvester. Coleridge.

Polygamous <Xpage=10>

Po*lyg"a*mous (?) , a. [Gr. <?/ living <?/ polygamy; <?/ many + <?/ marriage. Cf. Bigamy .]

1. Of or pertaining to polygamy; characterized by, or involving, polygamy; having a plurality of wives; as, polygamous marriages ; -- opposed to monogamous .

2. (Zo\'94l.) Pairing with more than one female.

Most deer, cattle, and sheep are polygamous . Darwin.

3. (Bot.) Belonging to the Polygamia; bearing both hermaphrodite and unisexual flowers on the same plant.

Polygamy <Xpage=10>

Po*lyg"a*my (?) , n. [Gr. <?/; cf. F. polygamie .] 1. The having of a plurality of wives or husbands at the same time; usually, the marriage of a man to more than one woman, or the practice of having several wives, at the same time; -- opposed to monogamy ; as, the nations of the East practiced polygamy . See the Note under Bigamy , and cf. Polyandry .

2. (Zo\'94l.) The state or habit of having more than one mate.

3. (Bot.) The condition or state of a plant which bears both perfect and unisexual flowers.

Polygastrian <Xpage=10>

Pol`y*gas"tri*an (?) , n. (Zo\'94l.) One of the Polygastrica. [Obs.]

Polygastric <Xpage=10>

Pol`y*gas"tric (?) , a. [ Poly- + gastric : cf. F. polygastrique .] 1. (Anat.) Having several bellies; -- applied to muscles which are made up of several bellies separated by short tendons.

2. (Zo\'94l.) Pertaining to the Polygastrica. [Obs.]

Polygastric <Xpage=10>

Pol`y*gas"tric (?) , n. (Zo\'94l.) One of the Polygastrica.

Polygastrica <Xpage=10>

Pol`y*gas"tri*ca (?) , n. pl. [NL. So called because they were supposed to have several stomachs, or digestive cavities.] (Zo\'94l.) The Infusoria. [Obs.]

Polygenesis, Polygeny <Xpage=10>

Pol`y*gen"e*sis (?) , Po*lyg"e*ny (?) , n. [ Poly- + genesis , or root of Gr. <?/ to be born.] (Biol.) The theory that living organisms originate in cells or embryos of different kinds, instead of coming from a single cell; -- opposed to monogenesis .

Polygenettic <Xpage=10>

Pol`y*ge*net"tic (?) , a. 1. Having many distinct sources; originating at various places or times.

2 . (Biol.) Of or pertaining to polygenesis; polyphyletic.

Polygenetic mountain range (Geol.) , one which is composite, or consists of two or more monogenetic ranges, each having had its own history of development.

Dana.

Polygenic <Xpage=10>

Pol`y*gen"ic (?) , a. (Biol.) Of or relating to polygeny; polygenetic.

Polygenism <Xpage=10>

Po*lyg"e*nism (?) , n. [Cf. F. polyg\'82nisme .] (Biol.) The doctrine that animals of the same species have sprung from more than one original pair.

Polygenist <Xpage=10>

Po*lyg"e*nist (?) , n. (Biol.) One who maintains that animals of the same species have sprung from more than one original pair; -- opposed to monogenist .

Polygenous <Xpage=10>

Po*lyg"e*nous (?) , a. [ Poly- + -genous : cf. Gr. <?/ of many families.] Consisting of, or containing, many kinds; as, a polygenous mountain .

Kirwan.

Polyglot <Xpage=10>

Pol"y*glot (?) , a. [Gr. <?/ manytongued; <?/ many + <?/, <?/, tongue, language: cf. F. polyglotte .] 1. Containing, or made up, of, several languages; as, a polyglot lexicon, Bible .

2. Versed in, or speaking, many languages.

Polyglot <Xpage=10>

Pol"y*glot , n. 1. One who speaks several languages. [R.] "A polyglot , or good linguist."

Howell.

2. A book containing several versions of the same text, or containing the same subject matter in several languages; esp., the Scriptures in several languages.

Enriched by the publication of polyglots . Abp. Newcome.

Polyglottous <Xpage=10>

Pol`y*glot"tous (?) , a. [See Polyglot .] Speaking many languages; polyglot. [R.] "The polyglottous tribes of America."

Max M\'81ller.

Polygon <Xpage=10>

Pol"y*gon (?) , n. [Gr. <?/ polygonal; <?/ many + <?/ angle: cf. F. polygone .] (Geom.) A plane figure having many angles, and consequently many sides; esp., one whose perimeter consists of more than four sides; any figure having many angles.

Polygon of forces (Mech.) , a polygonal figure, the sides of which, taken successively, represent, in length and direction, several forces acting simultaneously upon one point, so that the side necessary to complete the figure represents the resultant of those forces. Cf. Parallelogram of forces , under Parallelogram .

Polygonaceous <Xpage=10>

Pol`y*go*na"ceous (?) , a. [See Polygonum .] (Bot.) Of or pertaining to a natural order of apetalous plants ( Polygonace\'91 ), of which the knotweeds (species of Polygonum ) are the type, and which includes also the docks ( Rumex ), the buckwheat, rhubarb, sea grape ( Coccoloba ), and several other genera.

Polygonal <Xpage=10>

Po*lyg"o*nal (?) , a. Having many angles.

Polygonal numbers , certain figurate numbers. See under Figurate .

Polygoneutic <Xpage=10>

Pol`y*go*neu"tic (?) , a. [ Poly- + Gr. <?/ offspring.] (Zo\'94l.) Having two or more broods in a season.

Polygonometry <Xpage=10>

Pol`y*go*nom"e*try (?) , n. [ Polygon + -metry .] The doctrine of polygons; an extension of some of the principles of trigonometry to the case of polygons.

Polygonous <Xpage=10>

Po*lyg"o*nous (?) , a. Polygonal.

Polygonum <Xpage=10>

Po*lyg"o*num (?) , n. [NL., fr. Gr. <?/ a kind of plant; <?/ many + <?/ the knee, a joint of a plant. So called in allusion to the numerous joints.] (Bot.) A genus of plants embracing a large number of species, including bistort, knotweed, smartweed, etc.

Polygony <Xpage=10>

Po*lyg"o*ny (?) , n. (Bot.) Any plant of the genus Polygonum.

Polygordius <Xpage=10>

Pol`y*gor"di*us (?) , n. [NL. See Poly- , and Gordius .] (Zo\'94l.) A genus of marine annelids, believed to be an ancient or ancestral type. It is remarkable for its simplicity of structure and want of parapodia. It is the type of the order Archiannelida, or Gymnotoma. See Loeven's larva .

Polygram <Xpage=10>

Pol"y*gram (?) , n. [Gr. <?/ marked with many stripes; <?/ many + <?/ a line.] A figure consisting of many lines. [R.]

Barlow.

Polygraph <Xpage=10>

Pol"y*graph (?) , n. [Gr. <?/ writing much; <?/ much, many + <?/ to write: cf. F. polygraphe .] 1. An instrument for multiplying copies of a writing; a manifold writer; a copying machine.

2. In bibliography, a collection of different works, either by one or several authors.

Brande & C.

Polygraphic, Polygraphical <Xpage=10>

Pol`y*graph"ic (?) , Pol`y*graph"ic*al (?) , a. [Cf. F. polygraphique .] Pertaining to, or employed in, polygraphy; as, a polygraphic instrument .

2. Done with a polygraph; as, a polygraphic copy .

Polygraphy <Xpage=10>

Po*lyg"ra*phy (?) , n. [Gr. <?/; <?/ much + <?/ to write: cf. F. polygraphie .] 1. Much writing; writing of many books. [Obs.]

Fuller.

2. The art of writing in various ciphers, and of deciphering the same. [R.]

3. The art or practice of using a polygraph.

Polygrooved <Xpage=10>

Pol"y*grooved` (?) , a. [ Poly- + groove .] Having many grooves; as, a polygrooved rifle or gun (referring to the rifling) .

Polygyn <Xpage=10>

Pol"y*gyn (?) , n. [Cf. F. polygyne . See Polygyny .] (Bot.) A plant of the order Polygynia.

Polygynia <Xpage=10>

Pol`y*gyn"i*a (?) , n. pl. [NL. See Polygyny .] (Bot.) A Linn\'91an order of plants having many styles.

Polygynian, Polygynous <Xpage=10>

Pol`y*gyn"i*an (?) , Po*lyg"y*nous (?) , a. (Bot.) Having many styles; belonging to the order Polygynia.

Polygynist <Xpage=10>

Po*lyg"y*nist (?) , n. One who practices or advocates polygyny.

H. Spenser.

Polygyny <Xpage=10>

Po*lyg"y*ny (?) , n. [ Poly- + Gr. <?/ woman, wife.] The state or practice of having several wives at the same time; marriage to several wives.

H. Spenser.

Polyhalite <Xpage=10>

Pol`y*ha"lite (?) , n. [ Poly- + Gr. <?/ salt.] (Min.) A mineral usually occurring in fibrous masses, of a brick-red color, being tinged with iron, and consisting chiefly of the sulphates of lime, magnesia, and soda.

Polyhedral, Polyhedrical <Xpage=10>

Pol`y*he"dral (?) , Pol`y*hed"ric*al (?) , a. [See Polyhedron .] (Geom.) Having many sides, as a solid body.

Polyhedral angle , an angle bounded by three or more plane angles having a common vertex.

Polyhedron <Xpage=10>

Pol`y*he"dron (?) , n. ; pl. E. Polyhedrons . (#) , L. Polyhedra (#) . [NL., fr. Gr. <?/ with many seats or sides; <?/ many + <?/ a seat or side: cf. F. poly\'8adre .] 1. (Geom.) A body or solid contained by many sides or planes.

2. (Opt.) A polyscope, or multiplying glass.

Polyhedrous <Xpage=10>

Pol`y*he"drous (?) , a. Polyhedral.

Polyhistor <Xpage=10>

Pol`y*his"tor (?) , n. [Gr. <?/ very learned.] One versed in various learning. [R.]

Polyhymnia <Xpage=10>

Pol`y*hym"ni*a (?) , n. [L., from Gr. <?/; <?/ many + <?/ hymn.] (Anc. Myth.) The Muse of lyric poetry.

Polyiodide <Xpage=10>

Pol`y*i"o*dide (?) , n. (Chem.) A iodide having more than one atom of iodine in the molecule.

Polylogy <Xpage=10>

Po*lyl"o*gy (?) , n. [Gr. <?/; <?/ much + <?/ discourse.] Talkativeness. [R.]

Polyloquent <Xpage=10>

Po*lyl"o*quent (?) , a. [ Poly- + L. loquens , p. pr. of logui to speak.] Garrulous; loquacious. [R.]

Polymastism <Xpage=10>

Pol`y*mas"tism (?) , n. [ Poly- + Gr. <?/ a breast.] (Anat.) The condition of having more than two mamm\'91, or breasts.

<-- polymath = polymathist -->

Polymathic <Xpage=10>

Pol`y*math"ic (?) , a. [Cf. F. polymathique . See Polymathy .] Pertaining to polymathy; acquainted with many branches of learning.

Polymathist <Xpage=10>

Po*lym"a*thist (?) , n. One versed in many sciences; a person of various learning.

Polymathy <Xpage=10>

Po*lym"a*thy (?) , n. [Gr. <?/; <?/ much + <?/, <?/, to learn.] The knowledge of many arts and sciences; variety of learning.

Johnson.

Polymeniscous <Xpage=10>