provitamin A
Americannoun
Etymology
Origin of provitamin A
First recorded in 1950–55
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Anthocyanin accumulation in plants is associated with greater resistance to herbivory, fungal diseases, bacterial infections, heavy metal toxicity, and other environmental stresses, while carotenoids are a source of provitamin A in the human diet.
From Science Daily • Apr. 17, 2024
Vitamin A comes in two main forms, preformed vitamin A and provitamin A.
From Salon • Sep. 27, 2023
It contains so much provitamin A, a substance that transforms into vitamin A in the body, that its flesh has a distinctive orange tint.
From National Geographic • Jun. 22, 2023
The storied ‘golden rice’, which is enhanced with provitamin A and has been in limbo for 20 years, just a few months ago received approval in the Philippines for commercial cultivation.
From Scientific American • Dec. 24, 2021
Instead, Dale decided to look for a gene carrying high levels of provitamin A, or beta-carotene, which the liver converts into the vitamin on a need-only basis.
From Scientific American • Jul. 1, 2014
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
