Part 2

||Xan*tho"ma (?), 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.

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.

Xan"tho*phyll (?), 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.

Xan"tho*pous (?), a. [Xantho- + Gr. poy`s, podo`s, foot.] (Bot.) Having a yellow stipe, or stem.

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.

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.

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.

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.

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.

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||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.

Xan"those (?), n. (Chem.) An orange-yellow substance found in pigment spots of certain crabs.

||Xan*tho"sis (?), n. [NL., fr. Gr. xanqo`s yellow.] (Med.) The yellow discoloration often observed in cancerous tumors.

Xan`tho*sper"mous (?), a. [Xantho- + Gr. spe`rma sperm.] (Bot.) Having yellow seeds.

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.

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.

||Xan*thox"y*lum (?), 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.

The commonest species in the Northern United States is Xanthoxylum Americanum. See Prickly ash, under Prickly.

Xe"bec (z"bk), n. [Sp. jabegue, formerly spelt xabeque, or Pg. xabeco; both from Turk. sumbeki a kind of Asiatic ship; cf. Per. sumbuk, Ar. sumbk a small ship.] (Naut.) A small three-masted vessel, with projecting bow stern and convex decks, used in the Mediterranean for transporting merchandise, etc. It carries large square sails, or both. Xebecs were formerly armed and used by corsairs.

Xeme (zm), n. (Zoöl.) An Arctic fork-tailed gull (Xema Sabinii).

||Xen`e*la"si*a (?), n. [NL., from Gr. xenhlasi`a expulsion of strangers.] (Gr. Antiq.) A Spartan institution which prohibited strangers from residing in Sparta without permission, its object probably being to preserve the national simplicity of manners.

||Xe"ni*um (?), n.; pl. Xenia (#). [L., from Gr. xe`nion gift to a guest, fr. xe`nos guest.] (Class. Antiq.) A present given to a guest or stranger, or to a foreign ambassador.

||Xen`o*do*chi"um (?), n. [LL., fr. L. xenodochium a building for the reception of strangers, Gr. &?; .] (a) (Class. Antiq.) A house for the reception of strangers. (b) 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.]

Xe*nod"o*chy (?), n. [Gr. &?;.] Reception of strangers; hospitality. [R.]

Xe*nog"a*my (?), n. [Gr. xe`nos strange, foreign + &?; marriage.] (Bot.) Cross fertilization.

Xen`o*gen"e*sis (?), n. [Gr. xe`nos a stranger + E. genesis.] (Biol.) (a) Same as Heterogenesis. (b) The fancied production of an organism of one kind by an organism of another. Huxley.

Xen`o*ge*net"ic (?), a. (Biol.) Of or pertaining to xenogenesis; as, the xenogenetic origin of microzymes. Huxley.

Xen`o*ma"ni*a (?), n. [Gr. xe`nos strange + E. mania.] A mania for, or an inordinate attachment to, foreign customs, institutions, manners, fashions, etc. [R.] Saintsbury.