(Pol"ym*nite) n. [Gr. 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.

(Pol"y*morph) n. [Gr. multiform; poly`s many + form: cf. F. polymorphe.] (Crystallog.) A substance capable of crystallizing in several distinct forms; also, any one of these forms. Cf. Allomorph.

(Pol`y*mor"phic) a. Polymorphous.

(Pol`y*mor"phism) n.

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.

(||Pol`y*mor*pho"sis) n. [NL. See Poly-, and Morphosis.] (Zoöl.) The assumption of several structural forms without a corresponding difference in function; — said of sponges, etc.

(Pol`y*mor"phous) a.

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.

(Pol"y*mor`phy) n. Existence in many forms; polymorphism.

(Po`ly-moun"tain) n. (Bot.) (a) Same as Poly, n. (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.

(||Pol`y*my"o*dæ) n. pl. [NL. See Polymyoid.] (Zoöl.) Same as Oscines.

(Pol`y*my"o*dous) a. (Zoöl.) Polymyoid.

(Po*lym"y*oid) a. [Poly- + Gr. muscle + -oid.] (Zoöl.) Having numerous vocal muscles; of or pertaining to the Polymyodæ.

(Pol"y*neme) n. [Poly- + Gr. thread.] (Zoöl.) 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.

(Pol`y*ne"moid) a. [Polyneme + -oid.] (Zoöl.) Of or pertaining to the polynemes, or the family Polynemidæ.

(Pol`y*ne"sian) a. Of or pertaining to Polynesia (the islands of the eastern and central Pacific), or to the Polynesians.

(Pol`y*ne"sians) n. pl.; sing. Polynesian. (Ethnol.) The race of men native in Polynesia.

(Po*lyn"i*a) n. [Russ. poluineia a warm place in water, i. e., a place which does not freeze.] The open sea supposed to surround the north pole. Kane.

(Pol`y*no"mi*al) n. [Poly- + -nomial, as in monomial, binomial: cf. F. polynôme.] (Alg.) An expression composed of two or more terms, connected by the signs plus or minus; as, a2 - 2ab + b2.

(Pol`y*no"mi*al), a.

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