Xanthin :: Xanthin (n.) 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)..

Xanthin :: Xanthin (n.) A yellow insoluble coloring matter extracted from yellow flowers; specifically, the coloring matter of madder..

Xanthin :: Xanthin (n.) One of the gaseous or volatile decomposition products of the xanthates, and probably identical with carbon disulphide..

Xanthinine :: Xanthinine (n.) 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 :: Xanthium (n.) A genus of composite plants in which the scales of the involucre are united so as to form a kind of bur; cocklebur; clotbur.

Xanthorhiza :: Xanthorhiza (n.) 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..

Xenodochium :: Xenodochium (n.) A house for the reception of strangers.

Xenodochium :: Xenodochium (n.) In the Middle Ages, a room in a monastery for the reception and entertainment of strangers and pilgrims, and for the relief of paupers. [Called also Xenodocheion.].

Xeraphim :: Xeraphim (n.) An old money of account in Bombay, equal to three fifths of a rupee..

Xerophilous :: Xerophilous (a.) Drought-loving; able withstand the absence or lack of moisture.

Xiphias :: Xiphias (n.) A genus of fishes comprising the common swordfish.

Xiphias :: Xiphias (n.) The constellation Dorado.

Xiphias :: Xiphias (n.) A comet shaped like a swor.

Xiphidium :: Xiphidium (n.) A genus of plants of the order Haemodraceae, having two-ranked, sword-shaped leaves..

Xiphioid :: Xiphioid (a.) Of, pertaining to, or resembling, a cetacean of the genus Xiphius or family Xiphiidae..

Xiphiplastra :: Xiphiplastra (pl. ) of Xiphiplastro.

Xiphiplastron :: Xiphiplastron (n.) The posterior, or fourth, lateral plate in the plastron of turtles; -- called also xiphisternum..

Xiphisterna :: Xiphisterna (pl. ) of Xiphisternu.

Xiphisternum :: Xiphisternum (n.) The posterior segment, or extremity, of the sternum; -- sometimes called metasternum, ensiform cartilage, ensiform process, or xiphoid process..

Xiphisternum :: Xiphisternum (n.) The xiphiplastron.

Xiphius :: Xiphius (n.) 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..

Xylographic :: Xylographic (a.) Alt. of Xylographica.

Xylographical :: Xylographical (a.) Of or pertaining to xylography, or wood engraving..

Xylophilan :: Xylophilan (n.) One of a tribe of beetles (Xylophili) whose larvae live on decayed wood.

Xylophilous :: Xylophilous (a.) Of or pertaining to the xylophilans.

Yarwhip :: Yarwhip (n.) The European bar-tailed godwit; -- called also yardkeep, and yarwhelp. See Godwit..

Yellowshins :: Yellowshins (n.) See Yellolegs.

Yorkshire :: Yorkshire (n.) A county in the north of England.

Zechin :: Zechin (n.) See Sequin.

Zeugobranchiata :: Zeugobranchiata (n. pl.) Same as Zygobranchia.

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