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n and carbon, as methane, benzene, etc.; also, by extension, any of their derivatives. Hydrocarbon burner, furnace, stove, a burner, furnace, or stove with which liquid fuel, as petroleum, is used.

Of the nature, or containing, hydrocarbons.

A white, crystalline, nitrogenous hydrocarbon, C9H9NO, obtained from certain derivatives of cinnamic acid and closely related to quinoline and carbostyril.

Carbureted hydrogen; also, a hydrocarbon. [Obs.]

The hollow stem of a hydroid, either simple or branched. See Illust. of Gymnoblastea and Hydroidea.

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.

Relating to, or connected with, hydrocephalus, or dropsy of the brain.

Resembling hydrocephalus. Hydrocephaloid affection (Med.), the group of symptoms which follow exhausting diarrhea in young children, resembling those of acute hydrocephalus, or tubercular meningitis.

Having hydrocephalus. "Hydrocephalous offspring." G. Eliot.

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.

Same as Hydrochloride.

Pertaining to, or compounded of, chlorine and hydrogen gas; as, hydrochloric acid; chlorhydric. Hydrochloric acid (Chem.), hydrogen chloride; a colorless, corrosive gas, HCl, of pungent, suffocating odor. It is made in great quantities in the soda process, by the action of sulphuric acid on common salt. It has a great…

A compound of hydrochloric acid with a base; -- distinguished from a chloride, where only chlorine unites with the base.

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.

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.

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

le which rolls upon the concave side of a fixed circle. See Hypocycloid, Epicycloid, and Trochoid.

Of or pertaining to iatrochemistry, or to the iatrochemists.