(Hex*o"ic) a. (Chem.) Pertaining to, or derived from, hexane; as, hexoic acid.
(Hex"one) n. [Hex- + - one.] (Chem.) A liquid hydrocarbon, C6H8, of the valylene series,
obtained from distillation products of certain fats and gums.
(Hex"yl) n. [Hex- + - yl.] (chem.) A compound radical, C6H13, regarded as the essential residue
of hexane, and a related series of compounds.
(Hex"yl*ene) n. [Hex- + - yl + ethlene.] (Chem.) A colorless, liquid hydrocarbon, C6H12, of
the ethylene series, produced artificially, and found as a natural product of distillation of certain coals; also,
any one several isomers of hexylene proper. Called also hexene.
(Hex*yl"ic) a. (chem.) Pertaining to, or derived from, hexyl or hexane; as, hexylic alcohol.
(Hey) a. [See High.] High. [Obs.] Chaucer.
(Hey) interj. [OE. hei; cf. D. & G. hei.]
1. An exclamation of joy, surprise, or encouragement. Shak.
2. A cry to set dogs on. Shak.
(Hey"day`) interj. [Cf. G. heida, or hei da, D. hei daar. Cf. Hey, and There.] An expression
of frolic and exultation, and sometimes of wonder. B. Jonson.
(Hey"day`) n. [Prob. for. high day. See High, and Day.] The time of triumph and exultation; hence,
joy, high spirits, frolicsomeness; wildness.
The heyday in the blood is tame.Shak.
In the heyday of their victories.J. H. Newman.
(Hey"de*guy) n. [Perh. fr. heyday + guise.] A kind of country-dance or round. [Obs.] Spenser.
(Heyh, Heygh) a. High. [Obs.] Chaucer.
(Heyne) n. [AS. heán low, mean.] A wretch; a rascal. [Obs.] Chaucer.
(Hey"ten) adv. [Icel. han.] Hence. [Obs.] Chaucer.
(Hi*a"tion) n. [See Hiatus.] Act of gaping. [Obs.] Sir T. Browne.
(Hi*a"tus) n.; pl. L. Hiatus, E. Hiatuses [L., fr. hiare, hiatum, to gape; akin to E. yawn. See
1. An opening; an aperture; a gap; a chasm; esp., a defect in a manuscript, where some part is lost or
effaced; a space where something is wanting; a break.
2. (Gram.) The concurrence of two vowels in two successive words or syllables. Pope.
(Hi*ber"na*cle) n. [L. hibernaculum a winter residence, pl. hibernacula winter quarters: cf.
F. hibernacle. See Hibernate.] That which serves for protection or shelter in winter; winter quarters; as,
the hibernacle of an animal or a plant. Martyn.
(||Hi`ber*nac"u*lum) n. [See Hibernacle.]