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A body formed from bilirubin, identical with urobilin.

A hydro-aëroplane having two supporting planes.

mollusks, including those that breathe by gills, as contrasted with the Pulmonifera. -- Hy`dro*bran"chi*ate, a.

Same as Hydrobromide.

Composed of hydrogen and bromine; as, hydrobromic acid. Hydrobromic acid (Chem.), a colorless, pungent, corrosive gas, HBr, usually collected as a solution in water. It resembles hydrochloric acid, but is weaker and less stable. Called also hydrogen bromide.

A compound of hydrobromic acid with a base; -- distinguished from a bromide, in which only the bromine unites with the base.

A compound containing only hydrogen 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.