Webster's Dictionary, 1913

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Polycystine adjective (Zoology) Pertaining to the Polycystina. -- noun One of the Polycystina.

Polycyttaria noun plural [ New Latin , from Greek poly`s many + ..., dim. from ... a hollow vessel.] (Zoology) A division of Radiolaria. It includes those having one more central capsules.

Polydactylism noun [ Poly- + Greek ... finger: confer French polydactylisme .] (Anat.) The possession of more that the normal number of digits.

Polydipsia noun [ New Latin , from Greek poly`s much + ... thirst.] (Medicine) Excessive and constant thirst occasioned by disease.

Polyedron noun See Polyhedron .

Polyedrous adjective See Polyhedral .

Polyeidic adjective [ Poly- + Greek ... form.] (Zoology) Passing through several distinct larval forms; -- having several distinct kinds of young.

Polyeidism noun (Zoology) The quality or state of being polyeidic.

Polyembryonate adjective [ Poly- + embryonate .] (Botany) Consisting of, or having, several embryos; polyembryonic.

Polyembryonic adjective [ Poly- + embryonic .] (Botany) Polyembryonate.

Polyembryony noun [ See Poly- , and Embryo .] (Botany) 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 noun [ Poly- + foil , noun ] (Architecture) Same as Multifoil .

Polygala noun [ Latin , milkwort, from Greek ...; poly`s 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 adjective Of or pertaining to a natural order of plants ( Polygalaceæ ) of which Polygala is the type.

Polygalic adjective (Chemistry) Of, pertaining to, or obtained from, Polygala; specifically, designating an acrid glucoside (called polygalic acid , senegin , etc.), resembling, or possibly identical with, saponin .

Polygamia noun plural [ New Latin See Polygamous .] (Botany) (a) A Linnæan class of plants, characterized by having both hermaphrodite and unisexual flowers on the same plant. (b) A name given by Linnæus to file orders of plants having syngenesious flowers.

Polygamian adjective (Botany) Polygamous.

Polygamist noun [ Confer French polygamiste , polygame , Greek ..., adjective ] One who practices polygamy, or maintains its lawfulness.

Polygamize intransitive verb To practice polygamy; to marry several wives. Sylvester. Coleridge.

Polygamous adjective [ Greek ... living ... polygamy; poly`s many + ... marriage. Confer Bigamy .]

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

2. (Zoology) Pairing with more than one female.

Most deer, cattle, and sheep are polygamous .

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

Polygamy noun [ Greek ...; confer French 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 confer Polyandry .

2. (Zoology) The state or habit of having more than one mate.

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

Polygastrian (pŏl`ĭ*găs"trĭ* a n) noun (Zoology) One of the Polygastrica. [ Obsolete]

Polygastric (-trĭk) adjective [ Poly- + gastric : confer French polygastrique .]
1. (Anat.) Having several bellies; -- applied to muscles which are made up of several bellies separated by short tendons.

2. (Zoology) Pertaining to the Polygastrica. [ Obsolete]

Polygastric (pŏl`ĭ*găs"trĭk) noun (Zoology) One of the Polygastrica.

Polygastrica (-trĭ*kȧ) noun plural [ New Latin So called because they were supposed to have several stomachs, or digestive cavities.] (Zoology) The Infusoria. [ Obsolete]

Polygenesis (-jĕn"e*sĭs), Po*lyg"e*ny (po*lĭj"e*nȳ) noun [ Poly- + genesis , or root of Greek gi`gnesqai 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 .

Polygenetic adjective
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 (-jĕn"ĭk) adjective (Biol.) Of or relating to polygeny; polygenetic.

Polygenism (po*lĭj"e*nĭz'm) noun [ Confer French polygénisme .] (Biol.) The doctrine that animals of the same species have sprung from more than one original pair.

Polygenist (-nĭst) noun (Biol.) One who maintains that animals of the same species have sprung from more than one original pair; -- opposed to monogenist .

Polygenous adjective [ Poly- + -genous : confer Greek ... of many families.] Consisting of, or containing, many kinds; as, a polygenous mountain. Kirwan.

Polyglot adjective [ Greek poly`glwttos many-tongued; poly`s many + glw^tta , glw^ssa , tongue, language: confer French polyglotte .]
1. Containing, or made up, of, several languages; as, a polyglot lexicon, Bible.

2. Versed in, or speaking, many languages.

Polyglot noun
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 adjective [ See Polyglot .] Speaking many languages; polyglot. [ R.] "The polyglottous tribes of America." Max Müller.

Polygon noun [ Greek poly`gwnos polygonal; poly`s many + gwni`a angle: confer French 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. Confer Parallelogram of forces , under Parallelogram .

Polygonaceous adjective [ See Polygonum .] (Botany) Of or pertaining to a natural order of apetalous plants ( Polygonaceæ ), 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 adjective Having many angles.

Polygonal numbers , certain figurate numbers. See under Figurate .

Polygoneutic adjective [ Poly- + Greek ... offspring.] (Zoology) Having two or more broods in a season.

Polygonometry noun [ Polygon + -metry .] The doctrine of polygons; an extension of some of the principles of trigonometry to the case of polygons.

Polygonous adjective Polygonal.

Polygonum noun [ New Latin , from Greek ... a kind of plant; poly`s many + go`ny the knee, a joint of a plant. So called in allusion to the numerous joints.] (Botany) A genus of plants embracing a large number of species, including bistort, knotweed, smartweed, etc.

Polygony noun (Botany) Any plant of the genus Polygonum.

Polygordius noun [ New Latin See Poly- , and Gordius .] (Zoology) 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 noun [ Greek ... marked with many stripes; poly`s many + ... a line.] A figure consisting of many lines. [ R.] Barlow.

Polygraph noun [ Greek ... writing much; poly`s much, many + ... to write: confer French 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 adjective [ Confer French polygraphique .] Pertaining to, or employed in, polygraphy; as, a polygraphic instrument.

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

Polygraphy noun [ Greek ...; poly`s much + gra`fein to write: confer French polygraphie .]
1. Much writing; writing of many books. [ Obsolete] 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 adjective [ Poly- + groove .] Having many grooves; as, a polygrooved rifle or gun (referring to the rifling).

Polygyn noun [ Confer French polygyne . See Polygyny .] (Botany) A plant of the order Polygynia.

Polygynia noun plural [ New Latin See Polygyny .] (Botany) A Linnæan order of plants having many styles.