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

Fruit is low in calories and rich in nutrients like fiber, vitamins, and minerals. —Jillian Kubala, Health, 12 June 2025

These injectables typically contain natural ingredients like hyaluronic acid, vitamins, antioxidants and amino acids. —Bianca Salonga, Forbes.com, 12 June 2025

Spinach is high in fiber and vitamins A, C, and B9, while remaining low in carbohydrates and calories.9 Spinach also helps lower blood pressure and support heart health, likely due to its high nitrate content.1011 6. —Sarah Bence, Verywell Health, 11 June 2025

Authorities were reportedly sent to investigate possible sources of lead throughout the house, with Mann initially cooperating with investigators by handing over medications and vitamins Pettey was taking at the time of her hospitalization. —Julia Bonavita, FOXNews.com, 11 June 2025

Word History

Etymology

alteration of vitamine, from Latin vita life + English amine

First Known Use

circa 1912, in the meaning defined above

Phrases Containing vitamin

• B vitamin
• vitamin A
• vitamin B6
• vitamin B complex
• vitamin C
• vitamin D3
• vitamin E
• vitamin H
• vitamin K3

Kids 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