retinol

A liquid diterpene, C20H32, which is found in copaiba and is also formed by the distillation of rosin. It is occasionally used as a solvent in pharmacy, and as an ointment or liniment.

A hydrocarbon oil C32H16, obtained by the distillation of resin, -- used as a solvent, as an antiseptic, and in printer's ink.

One of the compounds which function as vitamin A. Called also vitamin A, vitamin A1 and vitamin A alcohol. See vitamin A1.

A fat-soluble carotenoid vitamin (vitamin A), present in fish oils and green vegetables, essential to normal vision and to bone development.

An unsaturated alcohol that occurs in marine fish-liver oils and is synthesized biologically from carotene.