provitamin

play
noun pro·vi·ta·min \ (ˌ)prō-ˈvī-tə-mən \

Definition of provitamin

:a precursor of a vitamin convertible into the vitamin in an organism

First Known Use of provitamin

1927


Medical Dictionary

provitamin

play
noun pro·vi·ta·min \ (ˈ)prō-ˈvīt-ə-mən \

medical Definition of provitamin

:a precursor of a vitamin convertible into the vitamin in an organism
  • ergosterol is a provitamin of vitamin D

Learn More about provitamin


Seen and Heard

What made you want to look up provitamin? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

alert quickness of mind or body

Get Word of the Day daily email!

Test Your Vocabulary

Merriam-Webster's New Words Quiz—Fall 2017 Edition!

  • young-plant-shoots
  • Which of the following is a new sense of the word bunny?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!