Search the Dictionary

See Hydrocyanide.

Pertaining to, or derived from the combination of, hydrogen and cyanogen. Hydrocyanic acid (Chem.), a colorless, mobile, volatile liquid, HCN, having a characteristic peach-blossom odor. It is one of the most deadly poisons. It is made by the action of sulphuric acid on yellow prussiate of potassium (potassium ferrocya…

A compound of hydrocyanic acid with a base; -- distinguished from a cyanide, in which only the cyanogen so combines.

derived from, the dynamical action of water of a liquid; of or pertaining to water power. Hydrodynamic friction, friction produced by the viscosity of a liquid in motion.

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.

An instrument to measure the velocity of a liquid current by the force of its impact.

Pertaining to, or containing, or obtained from, hydrogen, ferric iron, and cyanogen; as, hydroferricyanic acid. See Ferricyanic.

Pertaining to, or containing, or obtained from, hydrogen, ferrous iron, and cyanogen; as, hydroferrocyanic acid. See Ferrocyanic.

A supposed compound of hydrofluoris acid and a base; a fluoride. [Archaic]

Pertaining to, or containing, hydrogen and fluorine; fluohydric; as, hydrofluoric acid. Hydrofluoric acid (Chem.), a colorless, mobile, volatile liquid, HF, very corrosive in its action, and having a strong, pungent, suffocating odor. It is produced by the action of sulphuric acid on fluorite, and is usually collected…

A salt of hydrofluosilic acid; a silicofluoride. See Silicofluoride.

Pertaining to, or denoting, a compound consisting of a double fluoride of hydrogen and silicon; silicofluoric. See Silicofluoric.

o, produced by, or consisting of, electricity evolved by the action or use of fluids; as, hydrogalvanic currents. [R.]

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 o…

To hydrogenize.

The act of combining with hydrogen, or the state of being so combined.

A binary compound containing hydrogen; a hydride. [R.] See Hydride.

Hydrogen; -- called also in view of its supposed metallic nature. Graham.

To combine with hydrogen; to treat with, or subject to the action of, hydrogen; to reduce; -- contrasted with oxidize.

Of or pertaining to hydrogen; containing hydrogen.