Retinol
Retinol , noun
[Greek {not transcribed} resin + Latin oleum oil.]
1.
(Chemistry) A hydrocarbon oil C32H16, obtained by the distillation of resin, -- used as a solvent, as an antiseptic, and in printer's ink.
2.
One of the compounds which function as vitamin A. Called also vitamin A, vitamin A1 and vitamin A alcohol. See vitamin A1.