vitamin a2

noun

1. a yellow oil, C20H28O, similar to vitamin A, obtained from fish liver.

noun

1. a vitamin that occurs in the tissues of freshwater fish and has a function similar to that of vitamin A. Formula: C 20 H 28 OAlso called: dehydroretinol

n.

1. A golden yellow oil occurring chiefly in the livers of freshwater fish and having about 40 percent of the biological activity of vitamin A1.