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Definition of Vitamin a
1. Noun. Any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes.
Exact synonyms: A, Antiophthalmic Factor, Axerophthol
Generic synonyms: Fat-soluble Vitamin
Specialized synonyms: Retinol, Vitamin A1, Dehydroretinol, Vitamin A2
Generic synonyms: Fat-soluble Vitamin
Specialized synonyms: Retinol, Vitamin A1, Dehydroretinol, Vitamin A2
Definition of Vitamin a
1. Noun. (vitamin) Any of several closely related fat-soluble vitamins that are essential for normal vision; retinol. ¹
¹ Source: wiktionary.com
Medical Definition of Vitamin a
1.