XANTHINE; XANTHIN
Xan"thine, n. Also Xan"thin . [Gr. xanqo`s yellow.] (Physiol. Chem.)
Defn: A white microcrystalline nitrogenous compound, 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. Xanthine is closely related to uric acid.
XANTHININE
Xan"thi*nine, n. [Gr. xanqo`s yellow + quinine.] (Chem.)
Defn: 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 Xan"thi*um, 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.)
Defn: 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-
Xan"tho-.
Defn: A combining form from Gr. xanqo`s yellow; as in xanthocobaltic salts. Used also adjectively in chemistry.
XANTHOCARPOUS
Xan`tho*car"pous, a. [Xantho-+ Gr. karpo`s fruit.] (Bot.)
Defn: Having yellow fruit.