What is "axerophthol"

axerophthol \axerophthol\ n. 1. a vitamin essential for normal vision ( C20H30O); it prevents night blindness or inflammation or dryness of the eyes; same as vitamin A. One U.S.P. unit of vitamin A is equivalent to 0.30 micrograms of pure vitamin A alcohol.

Syn: vitamin A; vitamin A alcohol; antiophthalmic factor; biosterol; retinol; A.

n. vitamin A

n. any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes [syn: vitamin A, antiophthalmic factor, A]