noun
definition
Any biologically inactive compound that may be converted into a vitamin within an animal organism
Examples of provitamin in a Sentence
This form of vitamin A, known as provitamin A, carotene or beta-carotene, is water soluble and is not stored in the body.
It comes in two forms; preformed vitamin A, and provitamin A, a precursor that becomes vitamin A in the body once ingested.
Provitamin A is largely spared from ill effects, although it's the beta-carotene found in carrots that is responsible for the peculiar orange-tinted look people who jump on fad diets heavy on carrots get.
Many fruits, vegetables and herbs contain forms of provitamin A in significant quantities.
The provitamin A carotenes, especially beta-carotene, are known for the role they play in promoting good vision, especially night vision.
Instead of harmful chemicals, we use protein for strength, calcium for hardness, and ProVitamin B5 for flexibility.