||Hy`po*tra*che"li*um (?), n. [L., fr. Gr. &?;; &?; under + &?; neck.]
||(Arch.) Same as Gorgerin.
||Hy*pot"ri*cha (?), n. pl. [NL., fr. Gr. "ypo` beneath + &?;, &?;, a
||hair.] (Zoˆl.) A division of ciliated Infusoria in which the cilia
||cover only the under side of the body.
Hy`po*tro"choid (?), n. [Pref. hypo- + trochoid.] (Geom.) A curve,
traced by a point in the radius, or radius produced, of a circle which
rolls upon the concave side of a fixed circle. See Hypocycloid,
Epicycloid, and Trochoid.
||Hy`po*ty*po"sis (?), n. [NL., fr. Gr. &?;, fr. &?; to sketch out; &?;
||under + &?; to impress.] (Rhet.) A vivid, picturesque description of
||scenes or events.
Hy`po*xan"thin (?), n. [Pref. hypo- + xanthin.] (Physiol. Chem.) A
crystalline, nitrogenous substance, closely related to xanthin and uric
acid, widely distributed through the animal body, but especially in
muscle tissue; -- called also sarcin, sarkin.
Hy`po*zo"ic (?), a. [Pref. hypo- + Gr. &?; an animal.] (Geol.) Anterior
in age to the lowest rocks which contain organic remains. Lyell.
Hyp"pish (?), a. [From Hyp.] Affected with hypochondria; hypped.
[Written also hyppish.]
Hyp"po*griff (?), n. See Hyppogriff.
Hyp"si*loid (?), a. [From , the Greek letter called "upsilon" + -oid.]
(Anat.) Resembling the Greek letter in form; hyoid.
Hyp*som"e*ter (?), n. [Gr. &?; height + -meter.] (Physics) An
instrument for measuring heights by observation of barometric pressure;
esp., one for determining heights by ascertaining the boiling point of
water. It consists of a vessel for water, with a lamp for heating it,
and an inclosed thermometer for showing the temperature of ebullition.
{ Hyp`so*met"ric (?), Hyp`so*met"ric*al (?), } a. Of or pertaining to
hypsometry.
Hyp*som"e*try (?), n. That branch of the science of geodesy which has
to do with the measurement of heights, either absolutely with reference
to the sea level, or relatively.
Hy*pu"ral (?), a. [Pref. hypo- + Gr. &?; tail.] (Anat.) Under the tail;
-- applied to the bones which support the caudal fin rays in most
fishes.
Hy"ra*coid (?), a. (Zoˆl.) Of or pertaining to the Hyracoidea. -- n.
One of the Hyracoidea.
||Hyr`a*coi"de*a (?), n. pl. [NL. See Hyrax, and oid.] (Zoˆl.) An order
||of small hoofed mammals, comprising the single living genus Hyrax.
||Hy"rax (?), n. [NL., fr. Gr. &?; shrew mouse.] (Zoˆl.) Any animal of
||the genus Hyrax, of which about four species are known. They
||constitute the order Hyracoidea. The best known species are the daman
||(H. Syriacus) of Palestine, and the klipdas (H. capensis) of South
||Africa. Other species are H. arboreus and H. Sylvestris, the former
||from Southern, and the latter from Western, Africa. See Daman.
{ Hyr*ca"ni*an (?), Hyr"can (?), } a. Of or pertaining to Hyrcania, an
ancient country or province of Asia, southeast of the Caspian (which
was also called the Hyrcanian) Sea. "The Hyrcan tiger." "Hyrcanian
deserts." Shak.
Hyrse (?), n. [G. hirse, OHG. hirsi.] (Bot.) Millet.
Hyrst (?), n. A wood. See Hurst.
Hy"son (?), n. [Chin. hi-tshun, lit., first crop, or blooming spring.]
A fragrant kind of green tea.
Hyson skin, the light and inferior leaves separated from the hyson by a
winnowing machine. MëCulloch.
Hys"sop (?), n. [OE. hysope, ysope, OF. ysope, F. hysope, hyssope, L.
hysopum, hyssopum, hyssopus, Gr. &?;, &?;, an aromatic plant, fr. Heb.
sov.] A plant (Hyssopus officinalis). The leaves have an aromatic
smell, and a warm, pungent taste.
The hyssop of Scripture is supposed to be a species of caper (Capparis
spinosa), but probably the name was used for several different plants.
Hys`ter*an"thous (?), a. [Gr. &?; after + &?; flower.] (Bot.) Having
the leaves expand after the flowers have opened. Henslow.
||Hys`te*re"sis (?), n. [NL., fr. Gr. &?; to be behind, to lag.]
||(Physics) A lagging or retardation of the effect, when the forces
||acting upon a body are changed, as if from velocity or internal
||friction; a temporary resistance to change from a condition
||previously induced, observed in magnetism, thermoelectricity, etc.,
||on reversal of polarity.
Hys*te"ri*a (?), n. [NL.: cf. F. hystÈrie. See Hysteric.] (Med.) A
nervous affection, occurring almost exclusively in women, in which the
emotional and reflex excitability is exaggerated, and the will power
correspondingly diminished, so that the patient loses control over the
emotions, becomes the victim of imaginary sensations, and often falls
into paroxism or fits.
The chief symptoms are convulsive, tossing movements of the limbs and
head, uncontrollable crying and laughing, and a choking sensation as if
a ball were lodged in the throat. The affection presents the most
varied symptoms, often simulating those of the gravest diseases, but
generally curable by mental treatment alone.
{ Hys*ter"ic (?), Hys*ter"ic*al (?), } a. [L. hystericus, Gr. &?;, fr.
"yste`ra the womb; perh. akin to &?; latter, later, and E. utter, out.]
Of or pertaining to hysteria; affected, or troubled, with hysterics;
convulsive, fitful.
With no hysteric weakness or feverish excitement, they preserved
their peace and patience.
Bancroft.
Hys*ter"ics (?), n. pl. (Med.) Hysteria.
Hys`ter*o*ep"i*lep`sy (?), n. [Hysteria + epilepsy.] (Med.) A disease
resembling hysteria in its nature, and characterized by the occurrence
of epileptiform convulsions, which can often be controlled or excited
by pressure on the ovaries, and upon other definite points in the body.
-- Hys`ter*o*ep`i*lep"tic (#), a.
Hys`ter*o*gen"ic (?), a. [Hysteria + root of Gr. &?; to be born.]
(Physiol.) Producing hysteria; as, the hysterogenicpressure points on
the surface of the body, pressure upon which is said both to produce
and arrest an attack of hysteria. De Watteville.
Hys`ter*ol"o*gy (?), n. [Gr. &?;; &?; the latter + &?; discourse: cf.
F. hystÈrologie.] (Rhet.) A figure by which the ordinary course of
thought is inverted in expression, and the last put first; -- called
also hysteron proteron.
||Hys"te*ron prot"e*ron (?). [NL., fr. Gr. &?; the latter, following +
||&?; before, others, sooner.] (Rhet.) (a) A figure in which the
||natural order of sense is reversed; hysterology; as, valet atque
||vivit, "he is well and lives." (b) An inversion of logical order, in
||which the conclusion is put before the premises, or the thing proved
||before the evidence.
Hys*ter"o*phyte (?), n. [Gr. &?; following + &?; plant.] (Bot.) A
plant, like the fungus, which lives on dead or living organic matter.
-- Hys`ter*oph"y*tal (#), a.
Hys`ter*ot"o*my (?), n. [Gr. "yste`ra womb + &?; to cut: cf. F.
hystÈrotomie.] (Med.) The CÊsarean section. See under CÊsarean.
Hys"tri*cine (?), a. [See Hystrix.] (Zoˆl.) Like or pertaining to the
porcupines.
Hys`tri*co*mor"phous (?), a. [Hystrix + Gr. &?; form.] (Zoˆl.) Like, or
allied to, the porcupines; -- said of a group (Hystricomorpha) of
rodents.
Hys"trix (?), n. [Gr. &?; porcupine.] (Zoˆl.) A genus of rodents,
including the porcupine.