X.
X (&ebreve;ks). X, the twenty-fourth letter of the
English alphabet, has three sounds; a compound nonvocal sound (that of
ks), as in wax; a compound vocal sound (that of
gz), as in example; and, at the beginning of a word, a
simple vocal sound (that of z), as in xanthic. See
Guide to Pronunciation, §§ 217, 270, 271.
The form and value of X are from the Latin X, which is from the
Greek Χ, which in some Greek alphabets had the value of ks,
though in the one now in common use it represents an aspirated sound
of k.
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.
Xan"thate (?), n. [See Xanthic.]
(Chem.) A salt of xanthic; a xanthogenate.
||Xan`the*las"ma (?), n. [NL.; Gr.
xanqo`s yellow + 'e`lasma a metal plate.]
(Med.) See Xanthoma.
Xan"thi*an (?), a. Of or pertaining
to Xanthus, an ancient town on Asia Minor; -- applied
especially to certain marbles found near that place, and now in the
British Museum.
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.
Xan"thide (?), n. [See Xantho-.]
(Chem.) A compound or derivative of xanthogen.
[Archaic]
||Xan*thid"i*um (?), n.; pl.
Xanthidia (#). [NL., fr. Gr. xanqo`s
yellow.] (Bot.) A genus of minute unicellular algæ
of the desmids. These algæ have a rounded shape and are armed
with glochidiate or branched aculei. Several species occur in ditches,
and others are found fossil in flint or hornstone.
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.]
Xan"thi*nine (?), n. [Gr.
xanqo`s yellow + quinine.] (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.
||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.
Xan"tho- (?). A combining form from Gr.
xanqo`s yellow; as in xanthocobaltic salts. Used
also adjectively in chemistry.
Xan`tho*car"pous (?), a. [Xantho-
+ Gr. karpo`s fruit.] (Bot.) Having yellow
fruit.
||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.
Xan`tho*chro"ic (?), a. [Xantho-
+ Gr. chro`a color.] (Ethnol.) Having a
yellowish or fair complexion; of or pertaining to the
Xanthochroi.
Xan`tho*don"tous (?), a. [Xantho-
+ Gr. 'odoy`s, 'odo`ntos, tooth.] Having
yellow teeth.
Xan"tho*gen (?), n. [Xantho- +
-gen.] (Chem.) (a) The hypothetical
radical supposed to be characteristic of xanthic acid. [Archaic]
(b) Persulphocyanogen. [R.]
Xan"tho*gen*ate (?), n. (Chem.)
A salt of xanthic acid.
Xan`tho*gen"ic (?), a. [See Xantho-
, and -gen.] (Chem.) Producing a yellow color
or compound; xanthic. See Xanthic acid, under
Xanthic.
||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.
||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.
&fist; The commonest species in the Northern United States is
Xanthoxylum Americanum. See Prickly ash, under
Prickly.
Xe"bec (zē"b&ebreve;k), n. [Sp.
jabegue, formerly spelt xabeque, or Pg. xabeco;
both from Turk. sumbeki a kind of Asiatic ship; cf. Per.
sumbuk, Ar. sumbūk 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 (zēm), 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.
||Xen"o*mi (?), n. pl. [NL., from Gr.
xe`nos strange.] (Zoöl.) A suborder of
soft-rayed fresh-water fishes of which the blackfish of Alaska
(Dallia pectoralis) is the type.
||Xe*nop`te*ryg"i*i (?), n. pl. [NL.,
from Gr. xe`nos strange + &?;, dim. of &?; a wing.]
(Zoöl.) A suborder of fishes including
Gobiesox and allied genera. These fishes have soft-rayed fins,
and a ventral sucker supported in front by the pectoral fins. They are
destitute of scales.
Xen"o*time (?), n. [Gr. &?; honoring
guests or strangers; xe`nos guest, stranger + &?; honor:
cf. G. xenotim.] (Min.) A native phosphate of
yttrium occurring in yellowish-brown tetragonal crystals.
Xe*nu"rine (?), n. [Gr.
xe`nos strange + &?; tail.] (Zoöl.) A
cabassou.
Xen"yl (?), n. [Gr. xe`nos
strange + -yl.] (Chem.) The radical characteristic
of xenylic compounds.
Xe*nyl"ic (?), a. (Chem.)
Pertaining to, derived from, designating, certain amido compounds
obtained by reducing certain nitro derivatives of diphenyl.
Xer"a*phim (?), n. [Pg. xarafin,
xerafin, fr. Ar. ashrafī noble, the name of a gold
coin.] An old money of account in Bombay, equal to three fifths
of a rupee.
Xer"es (?), n. Sherry. See
Sherry.
Xer"if (?), n. A shereef.
Xer"iff (?), n. [See Shereef.]
A gold coin formerly current in Egypt and Turkey, of the value of
about 9s. 6d., or about $2.30; -- also, in Morocco, a
ducat.
||Xe`ro*der"ma (?), n. [NL., fr. Gr. &?;
dry + &?; skin.] (Med.) (a)
Ichthyosis. (b) A skin disease
characterized by the presence of numerous small pigmented spots
resembling freckles, with which are subsequently mingled spots of
atrophied skin.
Xe"ro*nate (?), n. (Chem.) A
salt of xeronic acid.
Xe*ron"ic (?), a. [Gr. &?; dry +
citraconic.] (Chem.) Pertaining to, or designating,
an acid, C8H12O4, related to fumaric
acid, and obtained from citraconic acid as an oily substance having a
bittersweet taste; -- so called from its tendency to form its
anhydride.
Xe*roph"a*gy (?), n. [L.
xerophagia, Gr. &?;; &?; dry + &?; to eat.] Among the
primitive Christians, the living on a diet of dry food in Lent and on
other fasts.
Xe*roph"i*lous (?), a. [Gr. &?; dry +
&?; to love.] (Bot.) Drought-loving; able withstand the
absence or lack of moisture.
Plants which are peculiarly adapted to dry climates are
termed by De Candolle xerophilous.
Goodale.
||Xe`roph*thal"mi*a (?), n. [L., fr. Gr.
&?;; &?; dry + &?; the eye. See Ophthalmia.] (Med.)
An abnormal dryness of the eyeball produced usually by long-
continued inflammation and subsequent atrophy of the
conjunctiva.
Xe`roph*thal"my (?), n. (Med.)
Xerophthalmia.
||Xiph"i*as (?), n. [L., a swordfish, a
sword-shaped comet, fr. Gr. xifi`as, fr. xi`fos
a sword.]
1. (Zoöl.) A genus of fishes
comprising the common swordfish.
2. (Anat.) (a) The
constellation Dorado. (b) A comet shaped
like a sword
||Xi*phid"i*um (?), n. [NL., from Gr.
&?;, dim. of xi`fos sword.] (Bot.) A genus of
plants of the order Hæmodraceæ, having two-ranked,
sword-shaped leaves.
Xiph"i*oid (?), a. [Xiphius +
-oid.] (Zoöl.) Of, pertaining to, or
resembling, a cetacean of the genus Xiphius or family
Xiphiidæ.
||Xiph"i*plas"tron (?), n.; pl.
Xiphiplastra (#). [NL., fr. Gr. xi`fos a
sword + plastron.] (Anat.) The posterior, or
fourth, lateral plate in the plastron of turtles; -- called also
xiphisternum.
||Xiph"i*ster"num (?), n.; pl.
Xiphisterna (#). [NL., fr. Gr. xi`fos a
sword + sternum.] (Anat.) (a) The
posterior segment, or extremity, of the sternum; -- sometimes called
metasternum, ensiform cartilage, ensiform
process, or xiphoid process. (b)
The xiphiplastron. -- Xiph"i*ster"nal (#)
a.
||Xiph"i*us (?), n. [NL., fr. Gr.
xi`fos a sword.] (Zoöl.) 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.
Xiph"o*don (?), n. [Gr.
xi`fos a sword + 'odoy`s, 'odo`ntos,
a tooth.] (Paleon.) An extinct genus of artiodactylous
mammals found in the European Tertiary formations. It had slender
legs, didactylous feet, and small canine teeth.
Xiph"oid (?; 277), a. [Gr. &?; sword-
shaped; xi`fos a sword + &?; form, shape: cf. F.
xiphoide.] (Anat.) (a) Like a
sword; ensiform. (b) Of or pertaining to
the xiphoid process; xiphoidian.
Xiph*oid"i*an (?), a. (Anat.)
Xiphoid.
Xi*phoph"yl*lous (?), a. [Gr.
xi`fos sword + &?; leaf.] (Bot.) Having sword-
shaped leaves.
||Xiph`o*su"ra (?), n. pl. See
Xiphura.
||Xi*phu"ra (?), n. pl. [NL., from Gr.
xi`fos sword + &?; tail.] (Zoöl.) Same as
Limuloidea. Called also Xiphosura.
X ray. See under Ray.
Xy*lam"ide (?), n. [Xylic +
amide.] (Chem.) An acid amide derivative of xylic
acid, obtained as a white crystalline substance.
Xy*lan"thrax (?), n. [Gr.
xy`lon wood + &?; coal.] Wood coal, or charcoal; -- so
called in distinction from mineral coal.
Xy"late (?), n. (Chem.) A
salt of xylic acid.
Xy"lem (?), n. [Gr. xy`lon
wood.] (Bot.) That portion of a fibrovascular bundle which
has developed, or will develop, into wood cells; -- distinguished from
phloëm.
Xy"lene (?), n. [Gr. xy`lon
wood.] (Chem.) Any of a group of three metameric
hydrocarbons of the aromatic series, found in coal and wood tar, and
so named because found in crude wood spirit. They are colorless, oily,
inflammable liquids,
C6H4.(CH3)2, being
dimethyl benzenes, and are called respectively orthoxylene,
metaxylene, and paraxylene. Called also
xylol.
&fist; Each of these xylenes is the nucleus and prototype of a
distinct series of compounds.
Xy"le*nol (?), n. [Xylene + -
ol.] (Chem.) Any one of six metameric phenol
derivatives of xylene, obtained as crystalline substances,
(CH3)2.C6H3.OH.
Xy*let"ic (?), a. (Chem.)
Pertaining to, or designating, a complex acid related to
mesitylenic acid, obtained as a white crystalline substance by the
action of sodium and carbon dioxide on crude xylenol.
Xy"lic (?), a. (Chem.)
Pertaining to, derived from, or related to, xylene; specifically,
designating any one of several metameric acids produced by the partial
oxidation of mesitylene and pseudo-cumene.
Xy*lid"ic (?), a. (Chem.)
Pertaining to, or designating, either one of two distinct acids
which are derived from xylic acid and related compounds, and are
metameric with uvitic acid.
Xy"li*dine (?), n. (Chem.)
Any one of six metameric hydrocarbons,
(CH3)2.C6H3.NH2
, resembling aniline, and related to xylene. They are liquids, or
easily fusible crystalline substances, of which three are derived from
metaxylene, two from orthoxylene, and one from paraxylene. They are
called the amido xylenes.
&fist; The xylidine of commerce, used in making certain dyes,
consists chiefly of the derivatives of paraxylene and metaxylene.
Xy*lin"de*in (?), n. (Chem.)
A green or blue pigment produced by Peziza in certain kinds of
decayed wood, as the beech, oak, birch, etc., and extracted as an
amorphous powder resembling indigo.
Xy"lite (?), n. [Gr. xy`lon
wood.] (Chem.) A liquid hydrocarbon found in crude wood
spirits.
Xy"li*tone (?), n. (Chem.) A
yellow oil having a geraniumlike odor, produced as a side product in
making phorone; -- called also xylite oil.
Xy"lo- (?). A combining form from Gr.
xy`lon wood; as in xylogen,
xylograph.
||Xy`lo*bal"sa*mum (?), n. [NL., fr. Gr.
xy`lon wood + &?; the balsam tree, balsam; cf. L.
xylobalsamum balsam wood, Gr. &?;.] (Med.) The
dried twigs of a Syrian tree (Balsamodendron Gileadense).
U. S. Disp.
Xy`lo*car"pous (?), a. [Xylo- +
Gr. karpo`s fruit.] (Bot.) Bearing fruit which
becomes hard or woody.
||Xy*loc"o*pa (?), n. [NL., fr. Gr. &?;
cutting wood; xy`lon wood + &?; to cut.]
(Zoöl.) A genus of hymenopterous insects including
the carpenter. See Carpenter bee, under
Carpenter. -- Xy*loc"o*pine (#),
a.
Xy"lo*gen (?), n. [Xylo- + -
gen.] (a) (Bot.) Nascent wood; wood
cells in a forming state. (b)
Lignin.
Xy"lo*graph (?), n. [Xylo- + -
graph.] An engraving on wood, or the impression from such an
engraving; a print by xylography.
Xy*log"ra*pher (?), n. One who
practices xylography.
{ Xy`lo*graph"ic (?), Xy`lo*graph"ic*al (?), }
a. [Cf. F. xylographique.] Of or
pertaining to xylography, or wood engraving.
Xy*log"ra*phy (?), n. [Xylo- +
-graphy: cf. F. xylographie.]
1. The art of engraving on wood.
2. The art of making prints from the natural
grain of wood. Knight.
3. A method pf printing in colors upon wood
for purposes of house decoration. Ure.
Xy"loid (?), a. [Xylo- + -
oid.] Resembling wood; having the nature of wood.
Xy*loid"in (?), n. [Xylo- + -
oid.] (Chem.) A substance resembling pyroxylin,
obtained by the action of nitric acid on starch; -- called also
nitramidin.
Xy"lol (?), n. [Xylo- + L.
oleum oil.] (Chem.) Same as
Xylene.
Xy"lon*ite (?), n. See
Zylonite.
||Xy*loph"a*ga (?), n. [NL. See
Xylophagous.] (Zoöl.) A genus of marine
bivalves which bore holes in wood. They are allied to
Pholas.
Xy*loph"a*gan (?), n. [See
Xylophagous.] (Zoöl.) (a) One
of a tribe of beetles whose larvæ bore or live in wood.
(b) Any species of Xylophaga.
(c) Any one of the Xylophagides.
||Xy`lo*phag"i*des (?), n. pl. [See
Xylophagous.] (Zoöl.) A tribe or family of
dipterous flies whose larvæ live in decayed wood. Some of the
tropical species are very large.
Xy*loph"a*gous (?), a. [Gr. &?; eating
wood; xy`lon wood + &?; to eat.] (Zoöl.)
(a) Eating, boring in, or destroying, wood; --
said especially of certain insect larvæ, crustaceans, and
mollusks. (b) Of or pertaining to the
genus Xylophaga.
Xy*loph"i*lan (?), n. [See
Xylophilous.] (Zoöl.) One of a tribe of
beetles (Xylophili) whose larvæ live on decayed
wood.
Xy*loph"i*lous (?), a. [Xylo- +
Gr. filei^n to love.] (Zoöl.) Of or
pertaining to the xylophilans.
Xy"lo*phone (?), n. [Xylo- + Gr.
fwnh` sound.]
1. (Mus.) An instrument common among
the Russians, Poles, and Tartars, consisting of a series of strips of
wood or glass graduated in length to the musical scale, resting on
belts of straw, and struck with two small hammers. Called in Germany
strohfiedel, or straw fiddle.
2. An instrument to determine the vibrative
properties of different kinds of wood. Knight.
Xy`lo*plas"tic (?), a. [Xylo- +
-plastic.] (Technol.) Formed of wood pulp by molds;
relating to casts made of wood pulp in molds.
Xy`lo*py*rog"ra*phy (?). n. [Xylo-
+ Gr. &?;, &?;, fire + -graphy.] The art or practice
of burning pictures on wood with a hot iron; -- called also poker
painting. See Poker picture, under Poker.
Xy`lo*qui"none (?), n. [Xylene +
quinone.] (Chem.) Any one of a group of quinone
compounds obtained respectively by the oxidation of certain xylidine
compounds. In general they are yellow crystalline
substances.
Xy*lor"cin (?), n. [Xylene +
orcin.] (Chem.) A derivative of xylene obtained as
a white crystalline substance which on exposure in the air becomes
red; -- called also betaorcin.
Xy*los"te*in (?), n. [Xylo- + Gr.
&?; bone.] (Chem.) A glucoside found in the poisonous
berries of a species of honeysuckle (Lonicera xylosteum), and
extracted as a bitter, white, crystalline substance.
Xy"lo*tile (?), n. Same as
Parkesine.
||Xy*lo"try*a (?), n. [NL., fr. Gr.
xy`lon wood + &?; to rub, wear out.] (Zoöl.)
A genus of marine bivalves closely allied to Teredo, and equally
destructive to timber. One species (Xylotrya fimbriata) is very
common on the Atlantic coast of the United States.
Xy"lyl (?), n. [Xylo- + -
yl.] (Chem.) Any one of three metameric radicals which
are characteristic respectively of the three xylenes.
Xy"lyl*ene (?), n. (Chem.)
Any one of three metameric radicals,
CH2.C6H4.CH2, derived
respectively from the three xylenes. Often used adjectively; as,
xylylene alcohol.
Xyr`i*da"ceous (?), a. (Bot.)
Of or pertaining to a natural order (Xyrideæ) of
endogenous plants, of which Xyris is the type.
||Xy"ris (?), n. [L., a kind of Iris,
Gr. &?;, fr. &?; a razor.] (Bot.) A genus of endogenous
herbs with grassy leaves and small yellow flowers in short, scaly-
bracted spikes; yellow-eyed grass. There are about seventeen species
in the Atlantic United States.
{ Xyst (?), ||Xys"tus (?), } n.
[L. xystus, Gr. &?;, from &?; to scrape, polish; -- so called
from its smooth and polished floor.] (Anc. Arch.) A long
and open portico, for athletic exercises, as wrestling, running, etc.,
for use in winter or in stormy weather.
Xyst"arch (?), n. [L. xystarches,
Gr. &?;, &?; a xyst + &?; to rule.] (Gr. Antiq.) An
office&?; having the superintendence of the xyst. Dr. W.
Smith.
Xys"ter (?), n. [NL., fr. Gr.
xysth`r a scraper.] (Surg.) An instrument for
scraping bones.
FRANCE
GERMANY
SPAIN
