Hydrolytic ferment(Physiol. Chem.), a ferment, enzyme, or chemical ferment, which acts only in the presence of water, and which causes the substance acted upon to take up a molecule of water. Thus, diastase of malt, ptyalin of saliva, and boiling dilute sulphuric acid all convert starch by hydration into dextrin and sugar. Nearly all of the digestive ferments are hydrolytic in their action.

(Hy`dro*mag"ne*site) n. [Hydro-, 1 + magnesite.] (Min.) A hydrous carbonate of magnesia occurring in white, earthy, amorphous masses.

(Hy"dro*man`cy) n. [Hydro-, 1 + -mancy: cf. F. hydromancie.] Divination by means of water, — practiced by the ancients.

(Hy`dro*man"tic) a. [Cf. F. hydromantique.] Of or pertaining to divination by water.

(Hy`dro*me*chan"ics) n. [Hydro- , 1 + mechanics.] That branch of physics which treats of the mechanics of liquids, or of their laws of equilibrium and of motion.

(||Hy`dro*me*du"sa) n.; pl. Hydromedusæ [NL. See Hydra, and Medusa.] (Zoöl.) Any medusa or jellyfish which is produced by budding from a hydroid. They are called also Craspedota, and naked-eyed medusæ.

Such medusæ are the reproductive zooids or gonophores, either male or female, of the hydroid from which they arise, whether they become free or remain attached to the hydroid colony. They in turn produce the eggs from which the hydroids are developed. The name is also applied to other similar medusæ which are not known to bud from a hydroid colony, and even to some which are known to develop directly from the eggs, but which in structure agree essentially with those produced from hydroids. See Hydroidea, and Gymnoblastea.

(Hy"dro*mel) n. [L. hydromel, hydromeli, Gr. water + honey: cf. F. hydromel.] A liquor consisting of honey diluted in water, and after fermentation called mead.

(Hy`dro*mel*lon"ic) a. See Cyamellone.

(Hy`dro*met`al*lur"gic*al) a. Of or pertaining to hydrometallurgy; involving the use of liquid reagents in the treatment or reduction of ores.Hy`dro*met`al*lur"gic*al*ly, adv.

(Hy`dro*met"al*lur`gy) n. [Hydro- , 1 + metallurgy.] The art or process of assaying or reducing ores by means of liquid reagents.

(Hy`dro*me"te*or) n. [Hydro-, 1 + meteor.] A meteor or atmospheric phenomenon dependent upon the vapor of water; — in the pl., a general term for the whole aqueous phenomena of the atmosphere, as rain, snow, hail, etc. Nichol.

Hydrokinetic to Hydruret

(Hy`dro*ki*net"ic) a. [Hydro- , 1 + kinetic.] Of or pertaining to the motions of fluids, or the forces which produce or affect such motions; — opposed to hydrostatic. Sir W. Thomson.

(Hy`dro*log"ic*al) a. Of or pertaining to hydrology.

(Hy*drol"o*gist) n. One skilled in hydrology.

(Hy*drol"o*gy) n. [Hydro-, 1 + -logy: cf. F. hydrologie.] The science of water, its properties, phenomena, and distribution over the earth's surface.

(Hy`dro*lyt"ic) a. [Hydro-, 1 + Gr. to loose.] (Chem.) Tending to remove or separate water; eliminating water.

Hydrolytic agents, such as sulphuric acid or caustic alkali.
Encyc. Brit.

  By PanEris using Melati.

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