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.
Xanthose
(Xan"those) n. (Chem.) An orange-yellow substance found in pigment spots of certain crabs.
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.
Xanthoxylum
(||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.
Xebec
(Xe"bec) n. [Sp. jabegue, formerly spelt xabeque, or Pg. xabeco; both from Turk. sumbeki a
kind of Asiatic ship; cf. Per. sumbuk, Ar. sumbuk 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
(Xeme) n. (Zoöl.) An Arctic fork-tailed gull
Xenelasia
(||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.
Xenium
(||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.
Xenodochium
(||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.]
Xenodochy
(Xe*nod"o*chy) n. Reception of strangers; hospitality. [R.]
Xenogamy
(Xe*nog"a*my) n. [Gr. xe`nos strange, foreign + marriage.] (Bot.) Cross fertilization.
Xenogenesis
(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.
Xenogenetic
(Xen`o*ge*net"ic) a. (Biol.) Of or pertaining to xenogenesis; as, the xenogenetic origin of
microzymes. Huxley.
