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

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

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

One of a series of compounds, derived from hydrogen sulphide by the replacement of half its hydrogen by a base or basic radical; as, potassium hydrosulphide, KSH. The hydrosulphides are analogous to the hydrates and include the mercaptans.

A saline compound of hydrosulphurous acid and a base. [R.]

ng water with an oxide, and yielding water by elimination. The hydroxides are regarded as compounds of hydroxyl, united usually with basic element or radical; as, calcium hydroxide ethyl hydroxide.

A compound radical, or unsaturated group, HO, consisting of one atom of hydrogen and one of oxygen. It is a characteristic part of the hydrates, the alcohols, the oxygen acids, etc.

A binary compound of hydrogen; a hydride. [Obs.]

the solid or insoluble portion. The latter is supposed to be partly nutritive and partly composed of idioplasm.

A writer or composed of hymns.

The art or act of composing hymns.

A composer or compiler of hymns; one versed in hymnology. Busby.

The hymns or sacred lyrics composed by authors of a particular country or period; as, the hymnology of the eighteenth century; also, the collective body of hymns used by any particular church or religious body; as, the Anglican hymnology.

A compound having a relatively large percentage of oxygen; a peroxide. [Obs.]

Composed of, or containing, hypersthene.

word, the remainder of which is carried to the next line; or between the parts of many a compound word; as in fine-leaved, clear-headed. It is also sometimes used to separate the syllables of words.

enters with a low valence, or in a low state of oxidization, usually the lowest, into the compounds indicated; as, hyposulphurous acid.

Pertaining to, or derived from, chlorine having a valence lower than in chlorous compounds. Hypochlorous acid (Chem.), an acid derived from chlorine, not known in a pure state, but forming various salts, called hypochlorites.

Containing or derived from nitrogen having a lower valence than in nitrous compounds. Hyponitrous acid (Chem.), an unstable nitrogen acid, NOH, whose salts are produced by reduction of the nitrates, although the acid itself is not isolated in the free state except as a solution in water; -- called also nitrosylic acid.…

derived from, or containing, phosphorus in a lower state of oxidation than in phosphoric compounds; as, hypophosphoric acid. Hypophosphoric acid (Chem.), an acid, P2H4O6, produced by the slow oxidation of moist phosphorus, and isolated only as a solution in water. It is regarded as a condensation product of one molecu…