Dictionary X

• Xanthamide Dictionary X - noun An amido derivative of xanthic acid obtained as a white crystalline substance, C2H5O.CS.NH2; - called also xanthogen amide.
• Xanthate Dictionary X - noun A salt of xanthic; a xanthogenate.
• Xanthelasma Dictionary X - noun See Xanthoma.
• Xanthian Dictionary X - adjective Of or pertaining to Xanthus, an ancient town on Asia Minor; - applied especially to certain marbles found near that place, and now in the British Museum.
• Xanthic Dictionary X - adjective Tending toward a yellow color, or to one of those colors, green being excepted, in which yellow is a constituent, as scarlet, orange, etc.
• Xanthide Dictionary X - noun A compound or derivative of xanthogen.
• Xanthidia Dictionary X - pleural of Xanthidium.
• Xanthidium Dictionary X - noun A genus of minute unicellular algae of the desmids. These algae have a rounded shape and are armed with glochidiate or branched aculei. Several species occur in ditches, and others are found fossil in flint or hornstone.
• Xanthin Dictionary X - noun A crystalline nitrogenous body closely related to both uric acid and hypoxanthin, present in muscle tissue, and occasionally found in the urine and in some urinary calculi. It is also present in guano. So called from the yellow color of certain of its salts (nitrates).
• Xanthinine Dictionary X - noun A complex nitrogenous substance related to urea and uric acid, produced as a white powder; - so called because it forms yellow salts, and because its solution forms a blue fluorescence like quinine.
• Xanthium Dictionary X - noun A genus of composite plants in which the scales of the involucre are united so as to form a kind of bur; cocklebur; clotbur.
• Xantho- Dictionary X - A combining form from Gr. xanqo`s yellow; as in xanthocobaltic salts. Used also adjectively in chemistry.
• Xanthocarpous Dictionary X - adjective Having yellow fruit.
• Xanthochroi Dictionary X - noun plural A division of the Caucasian races, comprising the lighter-colored members.
• Xanthochroic Dictionary X - adjective Having a yellowish or fair complexion; of or pertaining to the Xanthochroi.
• Xanthodontous Dictionary X - adjective Having yellow teeth.
• Xanthogen Dictionary X - noun The hypothetical radical supposed to be characteristic of xanthic acid.
• Xanthogenate Dictionary X - noun A salt of xanthic acid.
• Xanthogenic Dictionary X - adjective Producing a yellow color or compound; xanthic. See Xanthic acid, under Xanthic.
• Xanthoma Dictionary X - noun A skin disease marked by the development or irregular yellowish patches upon the skin, especially upon the eyelids; - called also xanthelasma.
• Xanthophane Dictionary X - noun The yellow pigment present in the inner segments of the retina in animals. See Chromophane.
• Xanthophyll Dictionary X - noun A yellow coloring matter found in yellow autumn leaves, and also produced artificially from chlorophyll; - formerly called also phylloxanthin.
• Xanthopous Dictionary X - adjective Having a yellow stipe, or stem.
• Xanthoproteic Dictionary X - adjective Pertaining to, or derived from, xanthoprotein; showing the characters of xanthoprotein; as, xanthoproteic acid; the xanthoproteic reaction for albumin.
• Xanthoprotein Dictionary X - noun A yellow acid substance formed by the action of hot nitric acid on albuminous or proteid matter. It is changed to a deep orange-yellow color by the addition of ammonia.
• Xanthopuccine Dictionary X - noun One of three alkaloids found in the root of the yellow puccoon (Hydrastis Canadensis). It is a yellow crystalline substance, and resembles berberine.
• Xanthorhamnin Dictionary X - noun A glucoside extracted from Persian berries as a yellow crystalline powder, used as a dyestuff.
• Xanthorhiza Dictionary X - noun A genus of shrubby ranunculaceous plants of North America, including only the species Xanthorhiza apiifolia, which has roots of a deep yellow color; yellowroot. The bark is intensely bitter, and is sometimes used as a tonic.
• Xanthorhoea Dictionary X - noun A genus of endogenous plants, native to Australia, having a thick, sometimes arborescent, stem, and long grasslike leaves. See Grass tree.
• Xanthose Dictionary X - noun An orange-yellow substance found in pigment spots of certain crabs.
• Xanthosis Dictionary X - noun The yellow discoloration often observed in cancerous tumors.
• Xanthospermous Dictionary X - adjective Having yellow seeds.
• Xanthous Dictionary X - adjective Yellow; specifically (Ethnol.), of or pertaining to those races of man which have yellowish, red, auburn, or brown hair.
• Xanthoxylene Dictionary X - noun A liquid hydrocarbon of the terpene series extracted from the seeds of a Japanese prickly ash (Xanthoxylum pipertium) as an aromatic oil.
• Xanthoxylum Dictionary X - noun A genus of prickly shrubs or small trees, the bark and rots of which are of a deep yellow color; prickly ash.
• Xebec Dictionary X - noun A small three-masted vessel, with projecting bow stern and convex decks, used in the Mediterranean for transporting merchandise, etc. It carries large square sails, or both. Xebecs were formerly armed and used by corsairs.
• Xeme Dictionary X - noun An Arctic fork-tailed gull (Xema Sabinii).
• Xenelasia Dictionary X - noun A Spartan institution which prohibited strangers from residing in Sparta without permission, its object probably being to preserve the national simplicity of manners.
• Xenia Dictionary X - pleural of Xenium.
• Xenium Dictionary X - noun A present given to a guest or stranger, or to a foreign ambassador.
• Xenodochium Dictionary X - noun A house for the reception of strangers.
• Xenodochy Dictionary X - noun Reception of strangers; hospitality.
• Xenogamy Dictionary X - noun Cross fertilization.
• Xenogenesis Dictionary X - noun Same as Heterogenesis.
• Xenogenetic Dictionary X - adjective Of or pertaining to xenogenesis; as, the xenogenetic origin of microzymes.
• Xenomania Dictionary X - noun A mania for, or an inordinate attachment to, foreign customs, institutions, manners, fashions, etc.
• Xenomi Dictionary X - noun plural A suborder of soft-rayed fresh-water fishes of which the blackfish of Alaska (Dallia pectoralis) is the type.
• Xenopterygii Dictionary X - noun plural A suborder of fishes including Gobiesox and allied genera. These fishes have soft-rayed fins, and a ventral sucker supported in front by the pectoral fins. They are destitute of scales.
• Xenotime Dictionary X - noun A native phosphate of yttrium occurring in yellowish-brown tetragonal crystals.
• Xenurine Dictionary X - noun A cabassou.
• Xenyl Dictionary X - noun The radical characteristic of xenylic compounds.
• Xenylic Dictionary X - adjective Pertaining to, derived from, designating, certain amido compounds obtained by reducing certain nitro derivatives of diphenyl.
• Xeraphim Dictionary X - noun An old money of account in Bombay, equal to three fifths of a rupee.
• Xeres Dictionary X - noun Sherry. See Sherry.
• Xerif Dictionary X - noun A shereef.
• Xeriff Dictionary X - noun A gold coin formerly current in Egypt and Turkey, of the value of about 9s. 6d., or about $2.30; - also, in Morocco, a ducat.
• Xeroderma Dictionary X - noun Ichthyosis.
• Xeronate Dictionary X - noun A salt of xeronic acid.
• Xeronic Dictionary X - adjective Pertaining to, or designating, an acid, C8H12O4, related to fumaric acid, and obtained from citraconic acid as an oily substance having a bittersweet taste; - so called from its tendency to form its anhydride.
• Xerophagy Dictionary X - noun Among the primitive Christians, the living on a diet of dry food in Lent and on other fasts.
• Xerophilous Dictionary X - adjective Drought-loving; able withstand the absence or lack of moisture.
• Xerophthalmia Dictionary X - noun An abnormal dryness of the eyeball produced usually by long-continued inflammation and subsequent atrophy of the conjunctiva.
• Xerophthalmy Dictionary X - noun Xerophthalmia.
• Xiphias Dictionary X - noun A genus of fishes comprising the common swordfish.
• Xiphidium Dictionary X - noun A genus of plants of the order Haemodraceae, having two-ranked, sword-shaped leaves.
• Xiphioid Dictionary X - adjective Of, pertaining to, or resembling, a cetacean of the genus Xiphius or family Xiphiidae.
• Xiphiplastra Dictionary X - pleural of Xiphiplastron.
• Xiphiplastron Dictionary X - noun The posterior, or fourth, lateral plate in the plastron of turtles; - called also xiphisternum.
• Xiphisterna Dictionary X - pleural of Xiphisternum.
• Xiphisternum Dictionary X - noun The posterior segment, or extremity, of the sternum; - sometimes called metasternum, ensiform cartilage, ensiform process, or xiphoid process.
• Xiphius Dictionary X - noun A genus of cetaceans having a long, pointed, bony beak, usually two tusklike teeth in the lower jaw, but no teeth in the upper jaw.
• Xiphodon Dictionary X - noun An extinct genus of artiodactylous mammals found in the European Tertiary formations. It had slender legs, didactylous feet, and small canine teeth.
• Xiphoid Dictionary X - adjective Like a sword; ensiform.
• Xiphoidian Dictionary X - adjective Xiphoid.
• Xiphophyllous Dictionary X - adjective Having sword-shaped leaves.
• Xiphosura Dictionary X - noun plural See Xiphura.
• Xiphura Dictionary X - noun plural Same as Limuloidea. Called also Xiphosura.
• Xylamide Dictionary X - noun An acid amide derivative of xylic acid, obtained as a white crystalline substance.
• Xylanthrax Dictionary X - noun Wood coal, or charcoal; - so called in distinction from mineral coal.
• Xylate Dictionary X - noun A salt of xylic acid.
• Xylem Dictionary X - noun That portion of a fibrovascular bundle which has developed, or will develop, into wood cells; - distinguished from phloem.
• Xylene Dictionary X - noun 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.
• Xylenol Dictionary X - noun Any one of six metameric phenol derivatives of xylene, obtained as crystalline substances, (CH3)2.C6H3.OH.
• Xyletic Dictionary X - adjective Pertaining to, or designating, a complex acid related to mesitylenic acid, obtained as a white crystalline substance by the action of sodium and carbon dioxide on crude xylenol.
• Xylic Dictionary X - adjective Pertaining to, derived from, or related to, xylene; specifically, designating any one of several metameric acids produced by the partial oxidation of mesitylene and pseudo-cumene.
• Xylidic Dictionary X - adjective Pertaining to, or designating, either one of two distinct acids which are derived from xylic acid and related compounds, and are metameric with uvitic acid.
• Xylidine Dictionary X - noun 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.
• Xylindein Dictionary X - noun 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 Dictionary X - noun A liquid hydrocarbon found in crude wood spirits.
• Xylitone Dictionary X - noun A yellow oil having a geraniumlike odor, produced as a side product in making phorone; - called also xylite oil.
• Xylo- Dictionary X - A combining form from Gr. xy`lon wood; as in xylogen, xylograph.
• Xylobalsamum Dictionary X - noun The dried twigs of a Syrian tree (Balsamodendron Gileadense).
• Xylocarpous Dictionary X - adjective Bearing fruit which becomes hard or woody.
• Xylocopa Dictionary X - noun A genus of hymenopterous insects including the carpenter. See Carpenter bee, under Carpenter.
• Xylogen Dictionary X - noun Nascent wood; wood cells in a forming state.
• Xylograph Dictionary X - noun An engraving on wood, or the impression from such an engraving; a print by xylography.
• Xylographer Dictionary X - noun One who practices xylography.
• Xylographic Dictionary X - adjective Alt. of Xylographical.
• Xylographical Dictionary X - adjective Of or pertaining to xylography, or wood engraving.
• Xylography Dictionary X - noun The art of engraving on wood.
• Xyloid Dictionary X - adjective Resembling wood; having the nature of wood.
• Xyloidin Dictionary X - noun A substance resembling pyroxylin, obtained by the action of nitric acid on starch; - called also nitramidin.
• Xylol Dictionary X - noun Same as Xylene.
• Xylonite Dictionary X - noun See Zylonite.
• Xylophaga Dictionary X - noun A genus of marine bivalves which bore holes in wood. They are allied to Pholas.
• Xylophagan Dictionary X - noun One of a tribe of beetles whose larvae bore or live in wood.
• Xylophagides Dictionary X - noun plural A tribe or family of dipterous flies whose larvae live in decayed wood. Some of the tropical species are very large.
• Xylophagous Dictionary X - adjective Eating, boring in, or destroying, wood; - said especially of certain insect larvae, crustaceans, and mollusks.
• Xylophilan Dictionary X - noun One of a tribe of beetles (Xylophili) whose larvae live on decayed wood.
• Xylophilous Dictionary X - adjective Of or pertaining to the xylophilans.
• Xylophone Dictionary X - noun 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.
• Xyloplastic Dictionary X - adjective Formed of wood pulp by molds; relating to casts made of wood pulp in molds.
• Xylopyrography Dictionary X - noun The art or practice of burning pictures on wood with a hot iron; - called also poker painting. See Poker picture, under Poker.
• Xyloquinone Dictionary X - noun 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 Dictionary X - noun A derivative of xylene obtained as a white crystalline substance which on exposure in the air becomes red; - called also betaorcin.
• Xylostein Dictionary X - noun A glucoside found in the poisonous berries of a species of honeysuckle (Lonicera xylosteum), and extracted as a bitter, white, crystalline substance.
• Xylotile Dictionary X - noun Same as Parkesine.
• Xylotrya Dictionary X - noun 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 Dictionary X - noun Any one of three metameric radicals which are characteristic respectively of the three xylenes.
• Xylylene Dictionary X - noun Any one of three metameric radicals, CH2.C6H4.CH2, derived respectively from the three xylenes. Often used adjectively; as, xylylene alcohol.
• Xyridaceous Dictionary X - adjective Of or pertaining to a natural order (Xyrideae) of endogenous plants, of which Xyris is the type.
• Xyris Dictionary X - noun 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 Dictionary X - noun Alt. of Xystus.
• Xystus Dictionary X - noun A long and open portico, for athletic exercises, as wrestling, running, etc., for use in winter or in stormy weather.
• Xystarch Dictionary X - noun An office/ having the superintendence of the xyst.
• Xyster Dictionary X - noun An instrument for scraping bones.

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