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
This cereal contains essential vitamins and minerals.
Did you remember to take your vitamin?
Recent Examples of vitamin from the Web
Strawberries are an excellent source of vitamin C, with a mere half-cup supplying most of your daily need.
Vitamin A helps skin produce new, healthy cells but can cause dryness and sun sensitivity.
PPIs can cause nutritional deficiencies, since acid is needed to release essential nutrients such as vitamin B12.
Along with the drink, take an extra B-vitamin complex to help recover faster from dehydration.
Tatcha also included a curious ingredient in its Violet-C Radiance Mask called the Japanese beautyberry, which packs tons of polyphenols and anxioxidant activity into the formula, helping stabilize the vitamin C and prevent it from breaking down.
Given the stakes, the vitamin C treatment didn't seem so crazy.
Depending on your skin type, anything from vitamin C to organic coconut oil can irritate skin.
A second type churned out all the proteins that allow cells to use vitamin B12, an essential molecule for metabolism.
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
First Known Use: circa 1912See Words from the same year
VITAMIN Defined for English Language Learners
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
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 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
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