Vitamin precursor

• A substance that is converted into a vitamin in animal tissues
• Beta carotene, since it can become A

Wiktionary Word definitions in Wiktionary
n. (context biochemistry English) Any biologically inactive compound that may be converted into a vitamin within an animal organism

WordNet Word definitions in WordNet
n. vitamin precursor; a substance that is converted into a vitamin in animal tissues

Wikipedia Word definitions in Wikipedia
A provitamin is a substance that may be converted within the body to a vitamin . The term "previtamin" is a synonym. For example, "Provitamin B5" is a name for panthenol , which may be converted in the body to vitamin B ( pantothenic acid ). The term "provitamin" ...