Webster's Dictionary, 1913

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Poly-mountain noun (Botany) (a) Same as Poly , noun (b) The closely related Teucrium montanum , formerly called Polium montanum , a plant of Southern Europe. (c) The Bartsia alpina , a low purple-flowered herb of Europe.

Polygynian, Polygynous adjective (Botany) Having many styles; belonging to the order Polygynia.

Polygynist noun One who practices or advocates polygyny. H. Spenser.

Polygyny noun [ Poly- + Greek ... woman, wife.] The state or practice of having several wives at the same time; marriage to several wives. H. Spenser.

Polyhalite noun [ Poly- + Greek ... 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 adjective [ 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 noun ; plural English Polyhedrons . , Latin Polyhedra . [ New Latin , from Greek ... with many seats or sides; poly`s many + ... a seat or side: confer French polyèdre .]
1. (Geom.) A body or solid contained by many sides or planes.

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

Polyhedrous adjective Polyhedral.

Polyhistor noun [ Greek ... very learned.] One versed in various learning. [ R.]

Polyhymnia noun [ Latin , from Greek ...; poly`s many + ... hymn.] (Anc. Myth.) The Muse of lyric poetry.

Polyiodide noun (Chemistry) A iodide having more than one atom of iodine in the molecule.

Polylogy noun [ Greek ...; poly`s much + ... discourse.] Talkativeness. [ R.]

Polyloquent adjective [ Poly- + Latin loquens , present participle of logui to speak.] Garrulous; loquacious. [ R.]

Polymastism noun [ Poly- + Greek ... a breast.] (Anat.) The condition of having more than two mammæ, or breasts.

Polymathic adjective [ Confer French polymathique . See Polymathy .] Pertaining to polymathy; acquainted with many branches of learning.

Polymathist noun One versed in many sciences; a person of various learning.

Polymathy noun [ Greek ...; poly`s much + ..., ..., to learn.] The knowledge of many arts and sciences; variety of learning. Johnson.

Polymeniscous adjective [ See Poly- , and Meniscus .] (Zoology) Having numerous facets; -- said of the compound eyes of insects and crustaceans.

Polymer noun [ See Polymeric .] (Chemistry) Any one of two or more substances related to each other by polymerism; specifically, a substance produced from another substance by chemical polymerization. [ Formerly also written polymere.]

Polymeric adjective [ Poly- + Greek ... part.] (Chemistry) Having the same percentage composition (that is, having the same elements united in the same proportion by weight), but different molecular weights; -- often used with with ; thus, cyanic acid (CNOH), fulminic acid (C 2 N 2 O 2 H 2 ), and cyanuric acid (C 3 N 3 O 3 H 3 ), are polymeric with each other.

» The figures expressing the number of atoms of each element in a number of polymeric substances are respectively multiples and factors of each other, or have some simple common divisor. The relation may be merely a numerical one, as in the example given above, or a chemical one, as in the case of aldehyde, paraldehyde, and metaldehyde.

Polymerism noun (Chemistry) (a) The state, quality, or relation of two or more polymeric substances. (b) The act or process of forming polymers.

Polymerization noun (Chemistry) The act or process of changing to a polymeric form; the condition resulting from such change.

Polymerize transitive verb (Chemistry) To cause polymerization of; to produce polymers from; to increase the molecular weight of, without changing the atomic proportions; thus, certain acids polymerize aldehyde.

Polymerize intransitive verb (Chemistry) To change into another substance having the same atomic proportions, but a higher molecular weight; to undergo polymerization; thus, aldehyde polymerizes in forming paraldehyde.

Polymerous adjective
1. (Botany) Having many parts or members in each set. Gray.

2. (Chemistry) Polymeric. [ Obsolete]

Polymnia noun See Polyhymnia .

Polymnite noun [ Greek ... full of moss; poly`s much + ... moss.] (Min.) A stone marked with dendrites and black lines, and so disposed as to represent rivers, marshes, etc.

Polymorph noun [ Greek ... multiform; poly`s many + ... form: confer French polymorphe .] (Crystallog.) A substance capable of crystallizing in several distinct forms; also, any one of these forms. Confer Allomorph .

Polymorphic adjective Polymorphous.

Polymorphism noun
1. (Crystallog.) Same as Pleomorphism .

2. (Biol.) (a) The capability of assuming different forms; the capability of widely varying in form. (b) Existence in many forms; the coexistence, in the same locality, of two or more distinct forms independent of sex, not connected by intermediate gradations, but produced from common parents.

Polymorphosis noun [ New Latin See Poly- , and Morphosis .] (Zoology) The assumption of several structural forms without a corresponding difference in function; -- said of sponges, etc.

Polymorphous adjective
1. Having, or assuming, a variety of forms, characters, or styles; as, a polymorphous author. De Quincey.

2. (Biol.) Having, or occurring in, several distinct forms; -- opposed to monomorphic .

Polymorphy noun Existence in many forms; polymorphism.

Polymyodous adjective (Zoology) Polymyoid.

Polymyodæ noun plural [ New Latin See Polymyoid .] (Zoology) Same as Oscines .

Polymyoid adjective [ Poly- + Greek ..., ..., muscle + -oid .] (Zoology) Having numerous vocal muscles; of or pertaining to the Polymyodæ.

Polyneme noun [ Poly- + Greek ... thread.] (Zoology) Any one of numerous species of tropical food fishes of the family Polynemidæ . They have several slender filaments, often very long, below the pectoral fin. Some of them yield isinglass of good quality. Called also threadfish .

Polynemoid adjective [ Polyneme + -oid .] (Zoology) Of or pertaining to the polynemes, or the family Polynemidæ .

Polynesian adjective Of or pertaining to Polynesia (the islands of the eastern and central Pacific), or to the Polynesians.

Polynesians noun plural ; sing. Polynesian . (Ethnol.) The race of men native in Polynesia.

Polynia noun [ Russian poluineia a warm place in water, i. e., a place which does not freeze.] The open sea supposed to surround the north pole. Kane.

Polynomial noun [ Poly- + -nomial , as in monomial , binomial : confer French polynôme .] (Alg.) An expression composed of two or more terms, connected by the signs plus or minus ; as, a 2 - 2ab + b 2 .

Polynomial adjective
1. Containing many names or terms; multinominal; as, the polynomial theorem.

2. Consisting of two or more words; having names consisting of two or more words; as, a polynomial name; polynomial nomenclature.

Polynuclear adjective [ Poly- + nuclear .] (Biol.) Containing many nuclei.

Polynucleolar adjective [ Poly- + nucleolar .] (Biol.) Having more than one nucleolus.

Polyommatous adjective [ Poly- + Greek ..., ..., the eye.] Having many eyes.

Polyonomous adjective [ Poly- + Greek ..., ..., name: confer Greek ....] Having many names or titles; polyonymous. Sir W. Jones.

Polyonomy noun [ Confer Greek ... a multitude of names.] The use of a variety of names for the same object. G. S. Faber.

Polyonym noun
1. An object which has a variety of names.

2. A polynomial name or term.

Polyonymous adjective Polyonomous.