Part 954

Hy*drom"e*try (?), n. [Cf. F. hydromËtrique.] 1. The art of determining the specific gravity of liquids, and thence the strength of spirituous liquors, saline solutions, etc.

2. The art or operation of measuring the velocity or discharge of running water, as in rivers, etc.

Hy`dro*mi"ca (?), n. [Hydro-, 1 + mica.] (Min.) A variety of potash mica containing water. It is less elastic than ordinary muscovite.

Hydromica schist (Min.), a mica schist characterized by the presence of hydromica. It often has a silky luster and almost soapy feel.

||Hy`dro*ne*phro"sis (?), n. [NL., Gr. "y`dwr water + &?; a kidney.] ||(Med.) An accumulation of urine in the pelvis of the kidney, ||occasioned by obstruction in the urinary passages.

Hy"dro*path (?), n. [Cf. F. hydropathe.] A hydropathist.

{ Hy`dro*path"ic (?), Hy`dro*path"ic*al (?), } a. Of or pertaining to hydropathy.

Hy*drop"a*thist (?), n. One who practices hydropathy; a water-cure doctor.

Hy*drop"a*thy (?), n. [Hydro-, 1 + Gr. &?;, &?;, to suffer.] The water cure; a mode of treating diseases by the copious and frequent use of pure water, both internally and externally.

||Hy`dro*per`i*to*ne"um (?), n. [NL. See Hydro-, and Peritoneum.] ||(Med.) Same as Ascites.

Hy"dro*phane (?), n. [Hydro-, 1 + Gr. &?; to show, appear: cf. F. hydrophane.] (Min.) A semitranslucent variety of opal that becomes translucent or transparent on immersion in water.

Hy*droph"a*nous (?), a. (Min.) Made transparent by immersion in water.

Hy"dro*phid (?), n. [Hydro-, 1 + Gr. &?; a small serpent.] (Zoˆl.) Any sea snake of the genus Hydrophys and allied genera. These snakes are venomous, live upon fishes, and have a flattened tail for swimming.

Hy`dro*phlo"rone (?), n. [Hydro- , 2 + phlorone.] (Chem.) A white, crystalline benzene derivative, C8H10O2, obtained by the reduction of phlorone.

Hy`dro*pho"bi*a (?), n. [L., fr. Gr. &?;; "y`dwr water + &?; fear: cf. F. hydrophobie.] (Med.) (a) An abnormal dread of water, said to be a symptom of canine madness; hence: (b) The disease caused by a bite form, or inoculation with the saliva of, a rabid creature, of which the chief symptoms are, a sense of dryness and construction in the throat, causing difficulty in deglutition, and a marked heightening of reflex excitability, producing convulsions whenever the patient attempts to swallow, or is disturbed in any way, as by the sight or sound of water; rabies; canine madness. [Written also hydrophoby.]

Hy`dro*phob"ic (?), a. [L. hydrophobicus, Gr. &?;: cf. F. hydrophobique.] Of or pertaining to hydrophobia; producing or caused by rabies; as, hydrophobic symptoms; the hydrophobic poison.

Hy"dro*pho`by (?), n. See Hydrophobia.

||Hy*droph"o*ra (?), n. pl. [NL., fr. E. hydra + Gr. &?; to bear.] ||(Zoˆl.) The Hydroidea.

Hy"dro*phore (?), n. [Gr. "y`dwr water + &?; to bear.] An instrument used for the purpose of obtaining specimens of water from any desired depth, as in a river, a lake, or the ocean.

||Hy`dro*phyl"li*um (?), n.; pl. L. Hydrophyllia (#), E. Hydrophylliums ||(#). [NL., fr. Gr. "y`dwr water + &?; a leaf.] (Zoˆl.) One of the ||flat, leaflike, protective zooids, covering other zooids of certain ||Siphonophora.

Hy"dro*phyte (?), n. [Gr. &?; + &?; plant: cf. F. hydrophyte.] An aquatic plant; an alga.

Hy*droph`y*tol"o*gy (?), n. [Hydro- + phyte + -logy.] The branch of botany which treats of water plants.

{ Hy*drop"ic (?), Hy*drop"ic*al (?), } a. [L. hydropicus, Gr. &?;: cf. F. hydropique. See Dropsy.] Dropsical, or resembling dropsy.

Every lust is a kind of hydropic distemper, and the more we drink the more we shall thirst.

Tillotson.

Hy*drop"ic*al*ly, adv. In a hydropical manner.

||Hy"dro*pi`per (?), n. [NL., fr. Gr. "y`dwr water + L. piper a ||pepper.] (Bot.) A species (Polygonum Hydropiper) of knotweed with ||acrid foliage; water pepper; smartweed.

Hy`dro*pneu*mat"ic (?), a. [Hydro- , 1 + pneumatic: cf. F. hydropneumatique.] Pertaining to, or depending upon, both liquid and gaseous substances; as, hydropneumatic apparatus for collecting gases over water or other liquids.