vitamin

noun vi·ta·min \ ˈvī-tə-mən , British usually ˈvi- \
Updated on: 1 Dec 2017

Definition of vitamin

: any of various organic substances that are essential in minute quantities to the nutrition of most animals and some plants, act especially as coenzymes and precursors of coenzymes in the regulation of metabolic processes but do not provide energy or serve as building units, and are present in natural foodstuffs or sometimes produced within the body

Examples of vitamin in a Sentence

  1. This cereal contains essential vitamins and minerals.

  2. Did you remember to take your vitamin?

Recent Examples of vitamin from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'vitamin.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of vitamin

alteration of vitamine, from Latin vita life + English amine

Other Biochemistry Terms


VITAMIN Defined for English Language Learners

vitamin

noun

Definition of vitamin for English Language Learners

  • : a natural substance that is usually found in foods and that helps your body to be healthy

  • : a pill containing vitamins


VITAMIN Defined for Kids

vitamin

noun vi·ta·min \ ˈvī-tə-mən \

Definition of vitamin for Students

: any of a group of substances that are found naturally in many foods, are necessary in small quantities for good health and normal development and functioning, and are designated by a capital letter and sometimes a number
  • vitamin B6
  • vitamin C

Medical Dictionary

vitamin

noun vi·ta·min \ ˈvīt-ə-mən, British also ˈvit- \

medical Definition of vitamin

: any of various organic substances that are essential in minute quantities to the nutrition of most animals and some plants, act especially as coenzymes and precursors of coenzymes in the regulation of metabolic processes but do not provide energy or serve as building units, and are present in natural foodstuffs or are sometimes produced within the body


Seen and Heard

What made you want to look up vitamin? 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

allowing a liquid or gas to pass through

Get Word of the Day daily email!

Test Your Vocabulary

Star Wars Words Quiz

  • cu-jedi-training
  • The bounty portion of bounty hunters (such as Boba Fett) comes from a Latin word meaning
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Syn City

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!