Webster's Dictionary 1913

3727

Hydrina

‖Hy‐dri″na (?), n. pl. [NL. See Hydra.] (Zoöl.) The group of hydroids to which the fresh-water hydras belong.

3728

Hydriodate

Hy‐dri″o‐date (?), n. [Cf. F. hydriodate.] (Zoöl.) Same as Hydriodide.

3729

Hydriodic

Hy′dri‐od″ic (?), a. [Hydr- + iodic: cf. F. hydriodique.] (Chem.) Pertaining to, or derived from, hydrogen and iodine; — said of an acid produced by the combination of these ele...

3730

Hydriodide

Hy‐dri″o‐dide (?), n.(Chem.) A compound of hydriodic acid with a base; — distinguished from an iodide, in which only the iodine combines with the base.

3731

Hydro

Hy″dro (?), n. A hydro-aëroplane.

3732

Hydro-

{ Hy″dro– (?), Hy″dr–. } 1. A combining form from Gr. �, �, water (see Hydra).2. (Chem.) A combining form of hydrogen, indicating hydrogen as an ingredient, as hydrochloric; or ...

3733

Hydro-aëroplane

Hy″dro–a″ër‐o‐plane′. (Aëronautics) An aëroplane with a boatlike or other understructure that enables it to travel on, or to rise from the surface of, a body of water by its own...

3734

Hydro-electric

Hy′dro–e‐lec″tric (?), a. [Hydro-, 1 + electric.] Pertaining to, employed in, or produced by, the evolution of electricity by means of a battery in which water or steam is used....

3735

Hydro-extractor

Hy′dro–ex‐tract″or (?), n. [Hydro-, 1 + extractor.] An apparatus for drying anything, as yarn, cloth, sugar, etc., by centrifugal force; a centrifugal.

3736

Hydrobarometer

Hy′dro‐ba‐rom″e‐ter (?), n. [Hydro-, 1 + barometer.] An instrument for determining the depth of the sea water by its pressure.

3737

Hydrobilirubin

Hy′dro‐bil′i‐ru″bin (?), n. [Hydro-, 2 + bilirubin.] (Physiol. Chem.) A body formed from bilirubin, identical with urobilin.

3738

Hydrobiplane

Hy″dro‐bi″plane, n. A hydro-aëroplane having two supporting planes.

3739

Hydrobranchiata

‖Hy′dro‐bran′chi‐a″ta (?), n. pl. [NL., fr. Gr. ὕδωρ water + � gills.] (Zoöl.) An extensive artificial division of gastropod mollusks, including those that breathe by gills, as ...

3740

Hydrobromate

Hy′dro‐bro″mate (?), n.(Chem.) Same as Hydrobromide.

3741

Hydrobromic

Hy′dro‐bro″mic (?), a. [Hydro-, 2 + bromic.] (Chem.) Composed of hydrogen and bromine; as, hydrobromic acid.Hydrobromic acid(Chem.), a colorless, pungent, corrosive gas, HBr, us...

3742

Hydrobromide

Hy′dro‐bro″mide (?), n.(Chem.) A compound of hydrobromic acid with a base; — distinguished from a bromide, in which only the bromine unites with the base.

3743

Hydrocarbon

Hy′dro‐car″bon (?), n. [Hydro-, 2 + carbon.] (Chem.) A compound containing only hydrogen and carbon, as methane, benzene, etc.; also, by extension, any of their derivatives.Hydr...

3744

Hydrocarbonaceous

Hy′dro‐car′bo‐na″ceous (?), a. Of the nature, or containing, hydrocarbons.

3745

Hydrocarbonate

Hy′dro‐car″bon‐ate (?), n. (a) (Old Chem.) A hydrocarbon. (b) (Chem.) A hydrous carbonate, as malachite.

3746

Hydrocarbostyril

Hy′dro‐car′bo‐sty″ril (?), n. [Hydro-, 2 + carbostyril.] (Chem.) A white, crystalline, nitrogenous hydrocarbon, C9H9NO, obtained from certain derivatives of cinnamic acid and cl...

3747

Hydrocarburet

Hy′dro‐car″bu‐ret (?), n. [Hydro-, 2 + carburet.] (Chem.) Carbureted hydrogen; also, a hydrocarbon.

3748

Hydrocaulus

Hy′dro‐cau″lus (?), n.; pl.Hydrocauli (#). [NL., fr. Gr. ὕδωρ water + � a stalk.] (Zoöl.) The hollow stem of a hydroid, either simple or branched. See Illust. of Gymnoblastea an...

3749

Hydrocele

Hy′dro‐cele (?), n. [L., fr. Gr. �; ὕδωρ water + � tumor.] (Med.) A collection of serous fluid in the areolar texture of the scrotum or in the coverings, especially in the serou...

3750

Hydrocephalic

Hy′dro‐ce‐phal″ic (?), a. Relating to, or connected with, hydrocephalus, or dropsy of the brain.

3751

Hydrocephaloid

Hy′dro‐ceph″a‐loid (?), a. [Hydrocephalus + -oid.] (Med.) Resembling hydrocephalus.Hydrocephaloid affection(Med.), the group of symptoms which follow exhausting diarrhea in youn...

3752

Hydrocephalous

Hy′dro‐ceph″a‐lous (?), a. Having hydrocephalus. “Hydrocephalous offspring.” G. Eliot.

3753

Hydrocephalus

Hy′dro‐ceph″a‐lus (?), n. [NL., fr. Gr. � hydrocephalus; ὕδωρ water + � head.] (Med.) An accumulation of liquid within the cavity of the cranium, especially within the ventricle...