Hypotrochoid
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 ...
Webster's Revised Unabridged Dictionary, C. & G. Merriam Co., 1913.
4.220 entries
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 ...
‖Hy′po‐ty‐po″sis (?), n.(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 a...
Hy′po‐zo″ic (?), a. [Pref. hypo- + Gr. ζο̑ͅον 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 Υ, the Greek letter called “upsilon” + -oid.] (Anat.) Resembling the Greek letter Υ 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 ascertai...
{ 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.(Zoöl.) Of or pertaining to the Hyracoidea. — n. One of the Hyracoidea.
‖Hyr′a‐coi″de‐a (?), n. pl. [NL. See Hyrax, and oid.] (Zoöl.) An order of small hoofed mammals, comprising the single living genus Hyrax.
‖Hy″rax (?), n.(Zoöl.) 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. Syria...
{ 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. “...
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 winno...
Hys″sop (?), n. [OE. hysope, ysope, OF. ysope, F. hysope, hyssope, L. hysopum, hyssopum, hyssopus, Gr. �, �, an aromatic plant, fr. Heb. ēsov.] A plant (Hyssopus officinalis). T...
Hys′ter‐an″thous (?), a.(Bot.) Having the leaves expand after the flowers have opened. Henslow.
‖Hys′te‐re″sis (?), n.(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 res...
Hys′ter‐et″ic (?), a.(Elec.) Of or pert. to hysteresis. — Hysteretic constant, the hysteretic loss in ergs per cubic centimeter per cycle.
Hys‐te″ri‐a (?), n. [NL.: cf. F. hystérie. See Hysteric.] (Med.) A nervous affection, occurring almost exclusively in women, in which the emotional and reflex excitability is ex...
{ Hys‐ter″ic (?), Hys‐ter″ic‐al (?), } a. [L. hystericus, Gr. �, fr. υστἕρα the womb; perh. akin to � latter, later, and E. utter, out.] Of or pertaining to hysteria; affected, ...
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 c...
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 whic...