vitamin
noun
vi·ta·min
ˈvī-tə-mən 
British usually
ˈvi-
: 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
This cereal contains essential vitamins and minerals.
Did you remember to take your vitamin?
Recent Examples on the Web
All of these products include nourishing ingredients such as avocado oil, biotin, agave nectar, and vitamins C, D, and E to repair bonds, remove buildup, and strengthen curls.
—
Larry Stansbury, Essence, 11 Feb. 2025
In fact, research suggests that eating more UPFs overall coincides with a decrease in levels of key vitamins and minerals.
—Erica Sloan, SELF, 6 Feb. 2025
Apples contain higher levels of vitamins A, E, and B1, while pears have higher levels of vitamins B3 and K.
—Cristina Mutchler, Verywell Health, 5 Feb. 2025
Vitamin D Vitamin D is a fat-soluble vitamin found in some foods and added to others.
—Melissa Nieves, Verywell Health, 30 Jan. 2025
See all Example Sentences for vitamin 
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Larry Stansbury, Essence, 11 Feb. 2025
In fact, research suggests that eating more UPFs overall coincides with a decrease in levels of key vitamins and minerals.
—Erica Sloan, SELF, 6 Feb. 2025
Apples contain higher levels of vitamins A, E, and B1, while pears have higher levels of vitamins B3 and K.
—Cristina Mutchler, Verywell Health, 5 Feb. 2025
Vitamin D Vitamin D is a fat-soluble vitamin found in some foods and added to others.
—Melissa Nieves, Verywell Health, 30 Jan. 2025
See all Example Sentences for vitamin
Dictionary Entries Near vitamin
Cite this Entry
“Vitamin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/vitamin. Accessed 21 Feb. 2025.
Copy CitationKids Definition
vitamin
noun
vi·ta·min
ˈvīt-ə-mən
: any of various substances that are necessary in very small amounts to the nutrition of most animals and some plants, that are important to the control of growth and development by activating and assisting in the function of enzymes, and that are present naturally in many foods or in some cases are produced within the body
Medical Definition
vitamin
noun
vi·ta·min
ˈvīt-ə-mən, British also ˈvit-
: 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
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