Xanthamide
Xanth•am´ide, n. [ Xanthic + amide.] (Chem.) An amido derivative of xanthic acid obtained as a white crystalline substance, C₂H₅O.CS.NH₂; — called also xanthogen amide.

Xanthate
Xan´thate, n. [See Xanthic.] (Chem.) A salt of xanthic; a xanthogenate.

Xanthic
Xan´thic, a. [Gr. xanqo•s yellow: cf. F. xanthique.]
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.
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. 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.

Xanthin
Xan´thin, n. [Gr. xanqo•s yellow.]
1. (Physiol. Chem.) 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).
2. (Chem.) A yellow insoluble coloring matter extracted from yellow flowers; specifically, the coloring matter of madder. [Formerly written also xanthein.]
3. (Chem.) One of the gaseous or volatile decomposition products of the xanthates, and probably identical with carbon disulphide. [Obs.]

Xanthinine
Xan´thi•nine, n. [Gr. xanqo•s yellow + qu inine.] (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.

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.) 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- 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.) Having yellow fruit.

Xanthochroi
Xan•thoch´ro•i, n. pl. [NL. See Xanthochroic.] (Ethnol.) A division of the Caucasian races, comprising the lighter-colored members.
"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.

Xanthochroid
Xan´tho•chroid, a. [See under Xanthrochroic, -oid.] (Ethnol.) Having a yellowish or fair complexion. — n. A person having xanthochroid traits.

Xanthodontous
Xan•tho•don´tous, a. [ Xantho- + Gr. ’odoy•s, ’odo•ntos, tooth.] Having yellow teeth.

Xanthogen
Xan´tho•gen, n. [ Xantho- + -gen.] (Chem.) (a) The hypothetical radical supposed to be characteristic of xanthic acid. [Archaic] (b) Persulphocyanogen. [R.]

Xanthogenate
Xan´tho•gen•ate, n. (Chem.) A salt of xanthic acid.

Xanthogenic
Xan•tho•gen´ic, a. [See Xantho-, and -gen.] (Chem.) Producing a yellow color or compound; xanthic. See Xanthic acid, under Xanthic.

Xanthomelanous
Xan•tho•mel´a•nous, a. [Pref. xantho- + Gr.,, black.] (Ethnol.) Of or pertaining to the lighter division of the Melanochroi, or those races having an olive or yellow complexion and black hair.

Xanthophane
Xan´tho•phane, n. [ Xantho- + Gr. fai•nein to show.] (Physiol.) The yellow pigment present in the inner segments of the retina in animals. See Chromophane.

Xanthopous
Xan´tho•pous, a. [ Xantho- + Gr. poy•s, podo•s, foot.] (Bot.) Having a yellow stipe, or stem.

Xanthoproteic
Xan•tho•pro•te´ic, a. (Physiol. Chem.) Pertaining to, or derived from, xanthoprotein; showing the characters of xanthoprotein; as xanthoproteic acid; the xanthoproteic reaction for albumin.

Xanthoprotein
Xan•tho•pro´te•in, 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.

Xanthopuccine
Xan•tho•puc´cine, 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.

Xanthorhamnin
Xan•tho•rham´nin, 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.

Xanthorhiza
Xan•tho•rhi´za, 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.

Xanthorhœa
Xan•tho•rhœ"a, 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.

Xanthosis
Xan•tho´sis, n. [NL., fr. Gr. xanqo•s yellow.] (Med.) The yellow discoloration often observed in cancerous tumors.

Xanthospermous
Xan•tho•sper´mous, a. [ Xantho- + Gr. spe•rma sperm.] (Bot.) Having yellow seeds.

Xanthous
Xan´thous, a. [Gr. xanqo•s yellow.] Yellow; specifically (Ethnol.), of or pertaining to those races of man which have yellowish, red, auburn, or brown hair.

Xanthoxylene
Xan•thox´y•lene, 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.