provitamin A


provitamin A
noun
an orange isomer of an unsaturated hydrocarbon found in many plants; is converted into vitamin A in the liver
Syn: ↑carotene, ↑carotin
Hypernyms: ↑provitamin
Hyponyms: ↑beta-carotene

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noun
: a provitamin of vitamin A; especially : carotene

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carotene.
[1950-55]

Useful english dictionary. 2012.