Hydroscope, hī′dro-skōp, n. a kind of water-clock, consisting of a cylindrical graduated tube, from which the water escaped through a hole in the bottom. [Gr. hydōr, water, skopein, to view.]
Hydrosoma, hī-dro-sō′ma, n. the entire organism of any hydrozoon:—pl. Hydrosō′mata.—adjs. Hydrosō′mal, Hydrosō′matous.
Hydrostatics, hī-dro-stat′iks, n.pl. used as sing., a branch of Hydrodynamics (which see).—n. Hy′drostat, an electrical contrivance for detecting a leakage or overflow of water: an apparatus devised to guard against the explosion of steam boilers.—adjs. Hydrostat′ic, -al.—adv. Hydrostat′ically.—Hydrostatic balance, a balance for weighing bodies in water to determine their specific gravity; Hydrostatic bellows, a device for illustrating the law that fluid pressure is proportional to area; Hydrostatic paradox, the principle that (disregarding molecular forces) any quantity of fluid, however small, may balance any weight, however great, as in the hydrostatic bellows; Hydrostatic press, the same as Hydraulic Press.
Hydrosulphuric, hī-dro-sul-fū′rik, adj. formed by a combination of hydrogen and sulphur.
Hydrotelluric, hī-dro-tel-lū′rik, adj. pertaining to hydrogen and tellurium.
Hydro-therapeutics, hī-dro-ther-a-pū′tiks, n.pl. remedial treatment of disease by water in various modes and forms—also Hydrother′apy.—adj. Hydrotherapeu′tic.
Hydrothermal, hī-dro-ther′mal, adj. pertaining to, or produced by, action of heated or super-heated water, esp. in dissolving, transporting, and redepositing mineral matter.
Hydrothorax, hī-dro-thō′raks, n. a term applied to dropsical collections in the pleura. [Gr. hydōr, water, thōrax, chest.]
Hydrotropism, hī-dro-trop′izm, n. the habit induced in a growing organ by the influence of moisture, of turning toward, or away from, the moisture.—adj. Hydrotrop′ic. [Gr. hydōr, water, tropos, a turn.]
Hydrous, hī′drus, adj. watery, containing hydrogen.