pos>a. (Chem.) Having a yellow color; pertaining to, derived from, or resembling, euxanthin. [ 1913 Webster ]

Euxanthic acid (Chem.), a yellow, crystalline, organic acid, extracted from euxanthin. [ 1913 Webster ]

n. [ Gr. e'y^ well + &unr_; yellow. ] (Chem.) A yellow pigment imported from India and China. It has a strong odor, and is said to be obtained from the urine of herbivorous animals when fed on the mango. It consists if a magnesium salt of euxanthic acid. Called also puri, purree, and Indian yellow. [ 1913 Webster ]

n. Same as Exanthema. [ 1913 Webster ]

‖n.; pl. Exanthemata [ L., fr. Gr.&unr_;, fr.&unr_; to burst forth as flowers, break out, as ulcers; &unr_;, &unr_;, out + 'anqei^n to bloom, 'a`nqos flower: cf. F. exanthème. ] (Med.) An efflorescence or discoloration of the skin; an eruption or breaking out, as in measles, smallpox, scarlatina, and the like diseases; -- sometimes limited to eruptions attended with fever. Dunglison.

{ } a. Of, relating to, or characterized by, exanthema; efflorescent; as, an exanthematous eruption. [ 1913 Webster ]

‖n. [ NL., from Gr. &unr_; . See Exanthema. ] (Med.) An eruption of the skin; cutaneous efflorescence. [ 1913 Webster ]

n. (Chem.) A persulphocyanate. [ Obs. ] [ 1913 Webster ]

a. [ Hydro-, 2 + xanthic. ] (Chem.) Persulphocyanic. [ 1913 Webster ]

n. [ Pref. hypo- + xanthin. ] (Physiol. Chem.) A crystalline, nitrogenous substance, closely related to xanthin and uric acid, widely distributed through the animal body, but especially in muscle tissue; -- called also sarcin, sarkin. [ 1913 Webster ]

n. [ Ilex the genus including the holly + Gr. &unr_; yellow. ] (Chem.) A yellow dye obtained from the leaves of the holly. [ 1913 Webster ]

n. [ Pref. Para- + xanthin. ] (Physiol. Chem.) A crystalline substance closely related to xanthin, present in small quantity in urine. [ 1913 Webster ]

{ } n. [ Gr. fy^kos seaweed + &unr_; yellow. ] A yellowish coloring matter found in certain algae. [ 1913 Webster ]

n. [ Phyllo- + Gr. xanqo`s yellow. ] (Bot.) A yellow coloring matter extracted from chlorophyll. [ 1913 Webster ]

n. [ Gr. &unr_; pus + &unr_; yellow. ] (Physiol. Chem.) A greenish yellow crystalline coloring matter found with pyocyanin in pus. [ 1913 Webster ]

n. [ Pyro- + Gr. &unr_; yellow. ] (Chem.) A yellow crystalline hydrocardon extracted from crude wood spirit; -- called also eblanin. [ 1913 Webster ]

n. [ 1st uro- + xanthin. ] (Physiol. Chem.) Same as Indican. [ 1913 Webster ]

n. [ Xanthic + amide. ] (Chem.) An amido derivative of xanthic acid obtained as a white crystalline substance, C2H5O.CS.NH2; -- called also xanthogen amide. [ 1913 Webster ]

n. [ See Xanthic. ] (Chem.) A salt of xanthic; a xanthogenate. [ 1913 Webster ]

‖n. [ NL.; Gr. xanqo`s yellow + 'e`lasma a metal plate. ] (Med.) See Xanthoma. [ 1913 Webster ]

a. 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. [ 1913 Webster ]

a. [ Gr. xanqo`s yellow: cf. F. xanthique. ] [ 1913 Webster ]

1. Tending toward a yellow color, or to one of those colors, green being excepted, in which yellow is a constituent, as scarlet, orange, etc. [ 1913 Webster ]

2. (Chem.) (a) Possessing, imparting, or producing a yellow color; as, xanthic acid. (b) Of or pertaining to xanthic acid, or its compounds; xanthogenic. (c) Of or pertaining to xanthin. [ 1913 Webster ]

Xanthic acid (Chem.), a heavy, astringent, colorless oil, C2H5O.CS.SH, having a pungent odor. It is produced by leading carbon disulphide into a hot alcoholic solution of potassium hydroxide. So called from the yellow color of many of its salts. Called also xanthogenic acid. --
Xanthic colors (Bot.), those colors (of flowers) having some tinge of yellow; -- opposed to cyanic colors. See under Cyanic. [ 1913 Webster ]

n. [ See Xantho-. ] (Chem.) A compound or derivative of xanthogen. [ Archaic ] [ 1913 Webster ]

‖n.; pl. Xanthidia [ NL., fr. Gr. xanqo`s yellow. ] (Bot.) 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. [ 1913 Webster ]

n. [ Gr. xanqo`s yellow. ] 1. same as xanthine. [ 1913 Webster ]

2. (Chem.) A yellow insoluble coloring matter extracted from yellow flowers; specifically, the coloring matter of madder. [ Formerly written also xanthein. ] [ 1913 Webster ]

3. (Chem.) One of the gaseous or volatile decomposition products of the xanthates, and probably identical with carbon disulphide. [ Obs. ] [ 1913 Webster ]

{ n. Also }. [ Gr. xanqo`s yellow. ] (Physiol. Chem.) A type of purine obtainable as a white microcrystalline powder, C5H4O2N4, present in muscle tissue, in the liver, spleen, pancreas, and other organs, and also in urine (in small quantities) and some urinary calculi, and in the juices of certain plants; -- so called because it leaves a yellow residue when evaporated to dryness with nitric acid. It is also present in guano. Xanthine is closely related to uric acid. [ Webster 1913 Suppl. ]

n. [ Gr. xanqo`s yellow + quinine. ] (Chem.) 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. [ 1913 Webster ]

‖n. [ NL., fr. Gr. xa`nqion a plant used for dyeing the hair yellow, said to be the Xanthium strumarium, from xanqo`s yellow. ] (Bot.) A genus of composite plants in which the scales of the involucre are united so as to form a kind of bur; cocklebur; clotbur. [ 1913 Webster ]

A combining form from Gr. xanqo`s yellow; as in xanthocobaltic salts. Used also adjectively in chemistry. [ 1913 Webster ]

a. [ Xantho- + Gr. karpo`s fruit. ] (Bot.) Having yellow fruit. [ 1913 Webster ]

‖n. pl. [ NL. See Xanthochroic. ] (Ethnol.) A division of the Caucasian races, comprising the lighter-colored members. [ 1913 Webster ]

The Xanthochroi, or fair whites, . . . are the prevalent inhabitants of Northern Europe, and the type may be traced into North Africa, and eastward as far as Hindostan. Tylor. [ 1913 Webster ]

a. [ Xantho- + Gr. chro`a color. ] (Ethnol.) Having a yellowish or fair complexion; of or pertaining to the Xanthochroi. [ 1913 Webster ]

a. [ See under Xanthrochroic, -oid. ] (Ethnol.) Having a yellowish or fair complexion. -- n. A person having xanthochroid traits. [ Webster 1913 Suppl. ]

n. Abnormal coloration of feathers in which yellow replaces the normal color, as in certain parrots. It is commonly due to lack of the dark pigment which with yellow forms green. [ Webster 1913 Suppl. ]

a. [ Xantho- + Gr. 'odoy`s, 'odo`ntos, tooth. ] Having yellow teeth. [ 1913 Webster ]

n. [ Xantho- + -gen. ] (Chem.) (a) The hypothetical radical supposed to be characteristic of xanthic acid. [ Archaic ] (b) Persulphocyanogen. [ R. ] [ 1913 Webster ]

n. (Chem.) A salt of xanthic acid. [ 1913 Webster ]

a. [ See Xantho-, and -gen. ] (Chem.) Producing a yellow color or compound; xanthic. See Xanthic acid, under Xanthic. [ 1913 Webster ]

‖n. [ NL. See Xantho-, and -oma. ] (Med.) A skin disease marked by the development or irregular yellowish patches upon the skin, especially upon the eyelids; -- called also xanthelasma. [ 1913 Webster ]

a. (Med.) Of or pertaining to xanthoma. [ Webster 1913 Suppl. ]

a. [ Pref. xantho- + Gr. &unr_;, &unr_;, black. ] (Ethnol.) Of or pertaining to the lighter division of the Melanochroi, or those races having an olive or yellow complexion and black hair. [ Webster 1913 Suppl. ]

n. [ Xantho- + Gr. fai`nein to show. ] (Physiol.) The yellow pigment present in the inner segments of the retina in animals. See Chromophane. [ 1913 Webster ]

n. [ Xantho- + Gr. fy`llon leaf. ] (Bot.) A yellow coloring matter found in yellow autumn leaves, and also produced artificially from chlorophyll; -- formerly called also phylloxanthin. [ 1913 Webster ]

a. [ Xantho- + Gr. poy`s, podo`s, foot. ] (Bot.) Having a yellow stipe, or stem. [ 1913 Webster ]

a. (Physiol. Chem.) Pertaining to, or derived from, xanthoprotein; showing the characters of xanthoprotein; as, xanthoproteic acid; the xanthoproteic reaction for albumin. [ 1913 Webster ]

n. [ Xantho- + protein. ] (Physiol. Chem.) 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. [ 1913 Webster ]

n. [ Xantho- + puccoon + -ine. ] (Chem.) One of three alkaloids found in the root of the yellow puccoon (Hydrastis Canadensis). It is a yellow crystalline substance, and resembles berberine. [ 1913 Webster ]

n. [ Xantho- + NL. Rhamnus, the generic name of the plant bearing Persian berries. ] (Chem.) A glucoside extracted from Persian berries as a yellow crystalline powder, used as a dyestuff. [ 1913 Webster ]

n. [ NL., fr. Gr. xanqo`s yellow + "ri`za root.] (Bot.) 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. [1913 Webster]

[1913 Webster]

‖n. [ NL., from Gr. xanqo`s yellow + "rei^n to flow.] (Bot.) A genus of endogenous plants, native to Australia, having a thick, sometimes arborescent, stem, and long grasslike leaves. See Grass tree. [1913 Webster]

n. (Chem.) An orange-yellow substance found in pigment spots of certain crabs. [ 1913 Webster ]