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- English Word Hydrocarburet Definition Carbureted hydrogen; also, a hydrocarbon.
- English Word Hydrocauli Definition of Hydrocaulus
- English Word Hydrocaulus Definition The hollow stem of a hydroid, either simple or branched. See Illust. of Gymnoblastea and Hydroidea.
- English Word Hydrocele Definition A collection of serous fluid in the areolar texture of the scrotum or in the coverings, especially in the serous sac, investing the testicle or the spermatic cord; dropsy of the testicle.
- English Word Hydrocephalic Definition Relating to, or connected with, hydrocephalus, or dropsy of the brain.
- English Word Hydrocephaloid Definition Resembling hydrocephalus.
- English Word Hydrocephalous Definition Having hydrocephalus.
- English Word Hydrocephalus Definition An accumulation of liquid within the cavity of the cranium, especially within the ventricles of the brain; dropsy of the brain. It is due usually to tubercular meningitis. When it occurs in infancy, it often enlarges the head enormously.
- English Word Hydrochlorate Definition Same as Hydrochloride.
- English Word Hydrochloric Definition Pertaining to, or compounded of, chlorine and hydrogen gas; as, hydrochloric acid; chlorhydric.
- English Word Hydrochloride Definition A compound of hydrochloric acid with a base; -- distinguished from a chloride, where only chlorine unites with the base.
- English Word Hydrocorallia Definition A division of Hydroidea, including those genera that secrete a stony coral, as Millepora and Stylaster. Two forms of zooids in life project from small pores in the coral and resemble those of other hydroids. See Millepora.
- English Word Hydrocyanate Definition See Hydrocyanide.
- English Word Hydrocyanic Definition Pertaining to, or derived from the combination of, hydrogen and cyanogen.
- English Word Hydrocyanide Definition A compound of hydrocyanic acid with a base; -- distinguished from a cyanide, in which only the cyanogen so combines.
- English Word Hydrodynamic Definition Alt. of Hydrodynamical
- English Word Hydrodynamical Definition Pertaining to, or derived from, the dynamical action of water of a liquid; of or pertaining to water power.
- English Word Hydrodynamics Definition That branch of the science of mechanics which relates to fluids, or, as usually limited, which treats of the laws of motion and action of nonelastic fluids, whether as investigated mathematically, or by observation and experiment; the principles of dynamics, as applied to water and other fluids.
- English Word Hydrodynamometer Definition An instrument to measure the velocity of a liquid current by the force of its impact.
- English Word Hydroferricyanic Definition Pertaining to, or containing, or obtained from, hydrogen, ferric iron, and cyanogen; as, hydroferricyanic acid. See Ferricyanic.
- English Word Hydroferrocyanic Definition Pertaining to, or containing, or obtained from, hydrogen, ferrous iron, and cyanogen; as, hydroferrocyanic acid. See Ferrocyanic.
- English Word Hydrofluate Definition A supposed compound of hydrofluoris acid and a base; a fluoride.
- English Word Hydrofluoric Definition Pertaining to, or containing, hydrogen and fluorine; fluohydric; as, hydrofluoric acid.
- English Word Hydrofluosilicate Definition A salt of hydrofluosilic acid; a silicofluoride. See Silicofluoride.
- English Word Hydrofluosilicic Definition Pertaining to, or denoting, a compound consisting of a double fluoride of hydrogen and silicon; silicofluoric. See Silicofluoric.
- English Word Hydrogalvanic Definition Pertaining to, produced by, or consisting of, electricity evolved by the action or use of fluids; as, hydrogalvanic currents.
- English Word Hydrogen Definition A gaseous element, colorless, tasteless, and odorless, the lightest known substance, being fourteen and a half times lighter than air (hence its use in filling balloons), and over eleven thousand times lighter than water. It is very abundant, being an ingredient of water and of many other substances, especially those of animal or vegetable origin. It may by produced in many ways, but is chiefly obtained by the action of acids (as sulphuric) on metals, as zinc, iron, etc. It is very inflammable, and is an ingredient of coal gas and water gas. It is standard of chemical equivalents or combining weights, and also of valence, being the typical monad. Symbol H. Atomic weight 1.
- English Word Hydrogenate Definition To hydrogenize.
- English Word Hydrogenated Definition of Hydrogenate
- English Word Hydrogenating Definition of Hydrogenate