vitamin a1 vitamin a • vitamin a2 · · · Info · Definitions · Synonyms · Characters · · vitamin a1 · · Text Common · · Latin · · Scripts 10 · · Length 4 · · Syllables Definitions · · · (noun) an unsaturated alcohol that occurs in marine fish-liver oils and is synthesized biologically from carotene. Synonyms: vitamin A1, retinol. · · Noun Definition 1 Synonyms · · · retinol · · Synonym 1 Characters · · space U+0020 1 digit one U+0031 a latin small letter a U+0061 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E t latin small letter t U+0074 v latin small letter v U+0076