Part 399

Pol`y*tech"nic (pl`*tk"nk), a. [Gr. poly`technos; poly`s many + te`chnh an art: cf. F. polytechnique.] Comprehending, or relating to, many arts and sciences; -- applied particularly to schools in which many branches of art and science are taught with especial reference to their practical application; also to exhibitions of machinery and industrial products.

Pol`y*tech"nic*al (?), a. Polytechnic.

Pol`y*tech"nics (?), n. The science of the mechanic arts.

||Pol`y*tha*la"mi*a (?), n. pl. [NL. See Polythalamous.] (Zoˆl.) A ||division of Foraminifera including those having a manychambered ||shell.

Pol`y*thal"a*mous (?), a. [Poly- + Gr. &?; a chamber.] (Zoˆl.) Many-chambered; -- applied to shells of Foraminifera and cephalopods. See Illust. of Nautilus.

Pol"y*the*ism (?), n. [Poly- + Gr. &?; cf. F. polythÈisme.] The doctrine of, or belief in, a plurality of gods.

In the Old Testament, the gradual development of polytheism from the primitive monotheism may be learned.

Shaff-Herzog.

Pol"y*the*ist, n. [Cf. F. polythÈiste.] One who believes in, or maintains the doctrine of, a plurality of gods.

{ Pol`y*the*is"tic (?), Pol`y*the*is"tic*al (?), } a. Of or pertaining to polytheism; characterized by polytheism; professing or advocating polytheism; as, polytheistic worship; a polytheistic author, or nation. -- Pol`y*the*is"tic*al*ly, adv.

Pol"y*the*ize (?), v. i. To adhere to, advocate, or inculcate, the doctrine of polytheism. Milman.

Pol`y*the"lism (?), n. [Poly- + Gr. qhlh` a nipple.] (Anat.) The condition of having more than two teats, or nipples.

Po*lyt"o*cous (?), a. [Gr. &?;; poly`s many + &?; offspring.] 1. (Bot.) Bearing fruit repeatedly, as most perennial plants; polycarpic.

2. (Zoˆl.) Producing many or young.

Po*lyt"o*mous (?), a. [Poly- + Gr. &?; a cutting, fr. &?; to cut.] (Bot.) Subdivided into many distinct subordinate parts, which, however, not being jointed to the petiole, are not true leaflets; -- said of leaves. Henslow.

Po*lyt"o*my (?), n. (Logic) A division into many members. F. Bowen.

Pol`y*tung"state (?), n. A salt of polytungstic acid.

Pol`y*tung"stic (?), a. (Chem.) Containing several tungsten atoms or radicals; as, polytungstic acid.

Polytungstic acid (Chem.), any one of several complex acids of tungsten containing more than one atom of tungsten.

Pol"y*type (?), n. [Poly- + - type.] (Print.) A cast, or facsimile copy, of an engraved block, matter in type, etc. (see citation); as, a polytype in relief.

By pressing the wood cut into semifluid metal, an intaglio matrix is produced: and from this matrix, in a similar way, a polytype in relief is obtained.

Hansard.

Pol"y*type, a. (Print.) Of or pertaining to polytypes; obtained by polytyping; as, a polytype plate.

Pol"y*type, v. t. [imp. & p. p. Polytyped (?); p. pr. & vb. n. Polytyping (?).] (Print.) To produce a polytype of; as, to polytype an engraving.

||Pol`y*u"ri*a (?), n. [NL. See Poly- , and Urine.] (Med.) A ||persistently excessive flow of watery urine, with low specific ||gravity and without the presence of either albumin or sugar. It is ||generally accompanied with more or less thirst.

Po*lyv"a*lent (?), a. [Poly- + L. valens, p. pr. See Valent.] (Chem.) Multivalent.

Pol"yve (?), n. [See Polive.] A pulley. [Obs.]

||Pol`y*zo"a (?), n. pl. [NL., fr. Gr. poly`s many + &?; an animal.] ||(Zoˆl.) Same as Bryozoa. See Illust. under Bryozoa, and ||PhylactolÊmata.