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

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‖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 ]

‖n. [ NL., fr. Gr. xanqo`s yellow. ] (Med.) The yellow discoloration often observed in cancerous tumors. [ 1913 Webster ]

a. [ Xantho- + Gr. spe`rma sperm. ] (Bot.) Having yellow seeds. [ 1913 Webster ]

a. [ Gr. xanqo`s yellow. ] Yellow; specifically (Ethnol.), of or pertaining to those races of man which have yellowish, red, auburn, or brown hair. [ 1913 Webster ]

n. [ See Xanthoxylum. ] (Chem.) A liquid hydrocarbon of the terpene series extracted from the seeds of a Japanese prickly ash (Xanthoxylum pipertium) as an aromatic oil. [ 1913 Webster ]

‖n. [ NL., from Gr. xanqo`s yellow + xy`lon wood. ] (Bot.) A genus of prickly shrubs or small trees, the bark and rots of which are of a deep yellow color; prickly ash. [ 1913 Webster ]

☞ The commonest species in the Northern United States is Xanthoxylum Americanum. See Prickly ash, under Prickly. [ 1913 Webster ]