Webster's Unabridged Dictionary - Letter X - Page 2
Xylidine (n.) (Chem.) Any one of six metameric hydrocarbons, (CH3)2.C6H3.NH2, resembling aniline, and related to xylene. They are liquids, or easily fusible crystalline substances, of which three are derived from metaxylene, two from orthoxylene, and one from paraxylene. They are called the amido xylenes.
Note: The xylidine of commerce, used in making certain dyes, consists chiefly of the derivatives of paraxylene and metaxylene.
Xylindein (n.) (Chem.) A green or blue pigment produced by Peziza in certain kinds of decayed wood, as the beech, oak, birch, etc., and extracted as an amorphous powder resembling indigo.
Xylite (n.) (Chem.) A liquid hydrocarbon found in crude wood spirits.
Xylitone (n.) (Chem.) A yellow oil having a geraniumlike odor, produced as a side product in making phorone; -- called also xylite oil.
Xylo- () A combining form from Gr. xy`lon wood; as in xylogen, xylograph.
Xylobalsamum (n.) (Med.) The dried twigs of a Syrian tree ({Balsamodendron Gileadense). -- U. S. Disp.
Xylocarpous (a.) (Bot.) Bearing fruit which becomes hard or woody.
Xylocopa (n.) (Zool.) A genus of hymenopterous insects including the carpenter. See Carpenter bee, under Carpenter. -- Xy*loc"o*pine, a.
Xylocopa (n.) Carpenter bees [syn: Xylocopa, genus Xylocopa].
Xylogen (n.) (Bot.) Nascent wood; wood cells in a forming state.
Xylogen (n.) Lignin.
Xylograph (n.) An engraving on wood, or the impression from such an engraving; a print by xylography.
Xylographer (n.) One who practices xylography. Xylographic
Xylographic (a.) Alt. of Xylographical.
Xylographical (a.) Of or pertaining to xylography, or wood engraving.
Xylography (n.) The art of engraving on wood.
Xylography (n.) The art of making prints from the natural grain of wood. -- Knight.
Xylography (n.) A method pf printing in colors upon wood for purposes of house decoration. -- Ure.
Xyloid (a.) Resembling wood; having the nature of wood.
Xyloidin (n.) (Chem.) A substance resembling pyroxylin, obtained by the action of nitric acid on starch; -- called also nitramidin.
Compare: Xylene
Xylene (n.) (Chem.) Any of a group of three metameric hydrocarbons of the aromatic series, found in coal and wood tar, and so named because found in crude wood spirit. They are colorless, oily, inflammable liquids, C6H4.(CH3)2, being dimethyl benzenes, and are called respectively orthoxylene, metaxylene, and paraxylene. Called also xylol.
Note: Each of these xylenes is the nucleus and prototype of a distinct series of compounds.
Xylol (n.) (Chem.) Same as Xylene.
Xylol (n.) A colorless flammable volatile liquid hydrocarbon used as a solvent [syn: xylene, xylol].
Xylonite (n.) See Zylonite.
Compare: Celluloid
Celluloid (n.) A substance composed essentially of gun cotton and camphor, and when pure resembling ivory in texture and color, but variously colored to imitate coral, tortoise shell, amber, malachite, etc. It is used in the manufacture of jewelry and many small articles, as combs, brushes, collars, and cuffs; -- originally called xylonite.
Xylophaga (n.) (Zool.) A genus of marine bivalves which bore holes in wood. They are allied to Pholas.
Xylophagan (n.) (Zool.) One of a tribe of beetles whose larvae bore or live in wood.
Xylophagan (n.) (Zool.) Any species of Xylophaga.
Xylophagan (n.) (Zool.) Any one of the Xylophagides.
Xylophagides (prop. n. pl.) (Zool.) A tribe or family of dipterous flies whose larvae live in decayed wood. Some of the tropical species are very large.
Xylophagous (a.) (Zool.) Eating, boring in, or destroying, wood; -- said especially of certain insect larvae, crustaceans, and mollusks.
Xylophagous (a.) (Zool.) Of or pertaining to the genus Xylophaga.
Xylophilan (n.) (Zool.) One of a tribe of beetles ({Xylophili) whose larvae live on decayed wood.
Xylophilous (a.) (Zool.) Of or pertaining to the xylophilans.
Xylophone (n.) (Mus.) Originally, 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; now any similar musical instrument composed of a series of bars of graduated length. Called in Germany strohfiedel, or straw fiddle.
Xylophone (n.) An instrument to determine the vibrative properties of different kinds of wood. -- Knight.
Xylophone (n.) A percussion instrument with wooden bars tuned to produce a chromatic scale and with resonators; played with small mallets [syn: marimba, xylophone].
Xyloplastic (a.) (Technol.) Formed of wood pulp by molds; relating to casts made of wood pulp in molds.
Xylopyrography (n.) The art or practice of burning pictures on wood with a hot iron; -- called also wood burning and poker painting. See Poker picture, under Poker.
Compare: Phlorone
Phlorone (n.) (Chem.) A yellow crystalline substance having a peculiar unpleasant odor, resembling the quinones, and obtained from beechwood tar and coal tar, as also by the oxidation of xylidine; -- called also xyloquinone.
Xyloquinone (n.) (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.
Xylorcin (n.) (Chem.) A derivative of xylene obtained as a white crystalline substance which on exposure in the air becomes red; -- called also betaorcin.
Xylostein (n.) (Chem.) A glucoside found in the poisonous berries of a species of honeysuckle ({Lonicera xylosteum), and extracted as a bitter, white, crystalline substance.
Compare: Parkesine
Parkesine (n.) A compound, originally made from gun cotton and castor oil, but later from different materials, and used as a substitute for vulcanized India rubber and for ivory; -- called also xylotile.
Xylotile (n.) Same as Parkesine.
Xylotrya (n.) (Zool.) 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.
Xylyl (n.) (Chem.) Any one of three metameric radicals which are characteristic respectively of the three xylenes.
Xylylene (n.) (Chem.) Any one of three metameric radicals, CH2.C6H4.CH2, derived respectively from the three xylenes. Often used adjectively; as, xylylene alcohol.
Xyridaceous (a.) (Bot.) Of or pertaining to a natural order ({Xyrideae) of endogenous plants, of which Xyris is the type.
Xyris (n.) (Bot.) A genus of endogenous herbs with grassy leaves and small yellow flowers in short, scaly-bracted spikes; yellow-eyed grass. There are about seventeen species in the Atlantic United States. Xyst
Xyris (n.) Chiefly American marsh plants, having usually yellow flowers [syn: Xyris, genus Xyris].
Xyst (n.) Alt. of Xystus.
Xystus (n.) (Anc. Arch.) A long and open portico, for athletic exercises, as wrestling, running, etc., for use in winter or in stormy weather.
Xystarch (n.) (Gr. Antiq.) An officer having the superintendence of the xyst. -- Dr. W. Smith.
Xyster (n.) (Surg.) An instrument for scraping bones.