a. (Med.) Counteracting or preventing hydrophobia. -- n. A remedy for hydrophobia. [ 1913 Webster ]

a. (Med.) Good against dropsy. -- n. A remedy for dropsy. [ 1913 Webster ]

n. [ Cf. F. hydropathe. ] A hydropathist.

{ } a. Of or pertaining to hydropathy. [ 1913 Webster ]

n. One who practices hydropathy; a water-cure doctor. [ 1913 Webster ]

n. [ Hydro-, 1 + Gr. &unr_;, &unr_;, to suffer. ] The water cure; a mode of treating diseases by the copious and frequent use of pure water, both internally and externally. [ 1913 Webster ]

‖n. [ NL. See Hydro-, and Peritoneum. ] (Med.) Same as Ascites. [ 1913 Webster ]

n. [ Hydro-, 1 + Gr. &unr_; to show, appear: cf. F. hydrophane. ] (Min.) A semitranslucent variety of opal that becomes translucent or transparent on immersion in water. [ 1913 Webster ]

a. (Min.) Made transparent by immersion in water. [ 1913 Webster ]

n. [ Hydro-, 1 + Gr. &unr_; a small serpent. ] (Zool.) Any sea snake of the genus Hydrophys and allied genera. These snakes are venomous, live upon fishes, and have a flattened tail for swimming. [ 1913 Webster ]

n. [ Hydro-, 2 + phlorone. ] (Chem.) A white, crystalline benzene derivative, C8H10O2, obtained by the reduction of phlorone. [ 1913 Webster ]

n. [ L., fr. Gr. &unr_;; "y`dwr water + &unr_; fear: cf. F. hydrophobie.] (Med.) (a) An abnormal dread of water, said to be a symptom of canine madness; hence: (b) A viral disease trransmitted by a bite from, or inoculation with the saliva of, a rabid creature, of which the chief symptoms are, a sense of dryness and constriction 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.] [1913 Webster]

a. [ L. hydrophobicus, Gr. &unr_;: cf. F. hydrophobique. ] Of or pertaining to hydrophobia; producing or caused by rabies; as, hydrophobic symptoms; the hydrophobic poison. [ 1913 Webster ]

n. See Hydrophobia. [ 1913 Webster ]

‖n. pl. [ NL., fr. E. hydra + Gr. fe`rein to bear. ] (Zool.) The Hydroidea. [ 1913 Webster ]

n. [ Gr. "y`dwr water + fe`rein 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. [1913 Webster]

‖n.; pl. L. Hydrophyllia E. Hydrophylliums [ NL., fr. Gr. "y`dwr water + &unr_; a leaf.] (Zool.) One of the flat, leaflike, protective zooids, covering other zooids of certain Siphonophora. [1913 Webster]

n. [ Gr. &unr_; + &unr_; plant: cf. F. hydrophyte. ] An aquatic plant; an alga. [ 1913 Webster ]

n. [ Hydro- + phyte + -logy. ] The branch of botany which treats of water plants.

{ } a. [ L. hydropicus, Gr. &unr_;: cf. F. hydropique. See Dropsy. ] Dropsical, or resembling dropsy. [ 1913 Webster ]

Every lust is a kind of hydropic distemper, and the more we drink the more we shall thirst. Tillotson. [ 1913 Webster ]

adv. In a hydropical manner. [ 1913 Webster ]

‖n. [ NL., fr. Gr. "y`dwr water + L. piper a pepper.] (Bot.) A species (Polygonum Hydropiper) of knotweed with acrid foliage; water pepper; smartweed. [1913 Webster]

n. [ Pref. hydro-, 1 + plane. ] 1. A plane, or any of a number of planes, projecting from the hull of a submarine boat, which by being elevated or depressed cause the boat, when going ahead, to sink or rise, after the manner of an aëroplane. [ Webster 1913 Suppl. ]

2. A projecting plane or fin on a hydroplane{ 3 } to lift the moving boat on top of the water; also, a gliding boat. [ Webster 1913 Suppl. ]

3. a powered surface boat fitted with planes (hydroplanes{ 2 }) projecting below the hull, designed to lift the boat, when moving rapidly, so that the hull itself is lifted out of the water and the boat is supported by the hydrodynamic forces of the water on the hydroplanes{ 2 }, thus permitting higher speeds; formerly called a gliding boat. [ Webster 1913 Suppl. +PJC ]

v. i. 1. Of a boat, to move through water while supported by hydroplanes{ 3 } (see hydroplane{ 3 }, above). [ Webster 1913 Suppl. ]

2. to move through a body of water supported by the hydrodynamic forces on a surface, similar in principle to a hydroplane{ 3 }; -- said, e. .g, of automobiles skidding on a shallow patch of water on a road when moving at high speed, thus causing the tires to lose contact with the road surface. [ PJC ]

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. [ 1913 Webster ]

. (Ordnance) A disappearing gun carriage in which the recoil is checked by cylinders containing liquid and air, the air when compressed furnishing the power for restoring the gun to the firing position. It is used with some English and European heavy guns. [ Webster 1913 Suppl. ]

n. Same as Dropsy. [ 1913 Webster ]

n. [ Hydro-, 1 + Gr. &unr_; to hurl. ] A machine for throwing water by hand power, as a garden engine, a fire extinguisher, etc. [ 1913 Webster ]