Part 5

{ Xy`lo*graph"ic (?), Xy`lo*graph"ic*al (?), } a. [Cf. F. xylographique.] Of or pertaining to xylography, or wood engraving.

Xy*log"ra*phy (?), n. [Xylo- + -graphy: cf. F. xylographie.]

1. The art of engraving on wood.

2. The art of making prints from the natural grain of wood. Knight.

3. A method pf printing in colors upon wood for purposes of house decoration. Ure.

Xy"loid (?), a. [Xylo- + - oid.] Resembling wood; having the nature of wood.

Xy*loid"in (?), n. [Xylo- + - oid.] (Chem.) A substance resembling pyroxylin, obtained by the action of nitric acid on starch; -- called also nitramidin.

Xy"lol (?), n. [Xylo- + L. oleum oil.] (Chem.) Same as Xylene.

Xy"lon*ite (?), n. See Zylonite.

||Xy*loph"a*ga (?), n. [NL. See Xylophagous.] (Zoöl.) A genus of marine bivalves which bore holes in wood. They are allied to Pholas.

Xy*loph"a*gan (?), n. [See Xylophagous.] (Zoöl.) (a) One of a tribe of beetles whose larvæ bore or live in wood. (b) Any species of Xylophaga. (c) Any one of the Xylophagides.

||Xy`lo*phag"i*des (?), n. pl. [See Xylophagous.] (Zoöl.) A tribe or family of dipterous flies whose larvæ live in decayed wood. Some of the tropical species are very large.

Xy*loph"a*gous (?), a. [Gr. &?; eating wood; xy`lon wood + &?; to eat.] (Zoöl.) (a) Eating, boring in, or destroying, wood; -- said especially of certain insect larvæ, crustaceans, and mollusks. (b) Of or pertaining to the genus Xylophaga.

Xy*loph"i*lan (?), n. [See Xylophilous.] (Zoöl.) One of a tribe of beetles (Xylophili) whose larvæ live on decayed wood.

Xy*loph"i*lous (?), a. [Xylo- + Gr. filei^n to love.] (Zoöl.) Of or pertaining to the xylophilans.

Xy"lo*phone (?), n. [Xylo- + Gr. fwnh` sound.]

1. (Mus.) An instrument common among the Russians, Poles, and Tartars, consisting of a series of strips of wood or glass graduated in length to the musical scale, resting on belts of straw, and struck with two small hammers. Called in Germany strohfiedel, or straw fiddle.

2. An instrument to determine the vibrative properties of different kinds of wood. Knight.

Xy`lo*plas"tic (?), a. [Xylo- + -plastic.] (Technol.) Formed of wood pulp by molds; relating to casts made of wood pulp in molds.

Xy`lo*py*rog"ra*phy (?). n. [Xylo- + Gr. &?;, &?;, fire + -graphy.] The art or practice of burning pictures on wood with a hot iron; -- called also poker painting. See Poker picture, under Poker.

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Xy`lo*qui"none (?), n. [Xylene + quinone.] (Chem.) Any one of a group of quinone compounds obtained respectively by the oxidation of certain xylidine compounds. In general they are yellow crystalline substances.

Xy*lor"cin (?), n. [Xylene + orcin.] (Chem.) A derivative of xylene obtained as a white crystalline substance which on exposure in the air becomes red; -- called also betaorcin.

Xy*los"te*in (?), n. [Xylo- + Gr. &?; bone.] (Chem.) A glucoside found in the poisonous berries of a species of honeysuckle (Lonicera xylosteum), and extracted as a bitter, white, crystalline substance.

Xy"lo*tile (?), n. Same as Parkesine.

||Xy*lo"try*a (?), n. [NL., fr. Gr. xy`lon wood + &?; to rub, wear out.] (Zoöl.) A genus of marine bivalves closely allied to Teredo, and equally destructive to timber. One species (Xylotrya fimbriata) is very common on the Atlantic coast of the United States.

Xy"lyl (?), n. [Xylo- + - yl.] (Chem.) Any one of three metameric radicals which are characteristic respectively of the three xylenes.

Xy"lyl*ene (?), n. (Chem.) Any one of three metameric radicals, CH2.C6H4.CH2, derived respectively from the three xylenes. Often used adjectively; as, xylylene alcohol.