Definitions for vitamin
ˈvaɪ tə mɪn; Brit. also ˈvɪt ə-; -mɪn, -ˌminvi·ta·min

Princeton's WordNet(3.00 / 2 votes)Rate this definition:

1. vitamin(noun)

   any of a group of organic substances essential in small quantities to normal metabolism

GCIDE(3.67 / 3 votes)Rate this definition:

1. Vitamin(n.)

   any of several organic chemical substances not synthesized by an animal and required in small quantities for normal metabolism, present in and obtained from the natural foods eaten by the animal. Human vitamins are also produced synthetically, and taken in pure form or in mixtures, as dietary supplements. Deficiencies of specific vitamins lead to certain specific disorders, such as scurvy, caused by an insufficiency of vitamin C (ascorbic acid). Most vitamins act as coenzymes or precursors to coenzymes, and are not consumed for energy production or incorporated into structural units of the cell.

Wiktionary(3.00 / 1 vote)Rate this definition:

1. vitamin(Noun)

   Any of a specific group of organic compounds essential in small quantities for healthy human growth, metabolism, development, and body function; found in minute amounts in plant and animal foods or sometimes produced synthetically; deficiencies of specific vitamins produce specific disorders.

Origin: 1920, originally vitamine (1912), from vita (see vital) + amine (see amino acid). Vitamine coined by Polish biochemist after the initial discovery of aberic acid (thiamine), when it was thought that all such nutrients would be amines. The term had become ubiquitous by the time it was discovered that vitamin C, among others, had no amine component. In 1920, British biochemist proposed that the final -e be dropped to deemphasize the amine reference. The ending -in was acceptable because it was used for neutral substances of undefined composition. Drummond introduced the lettering system of nomenclature (Vitamin A, B, C, etc.) also at this same time.

Freebase(3.00 / 2 votes)Rate this definition:

1. Vitamin

   A vitamin is an organic compound required by an organism as a vital nutrient in limited amounts. An organic chemical compound is called a vitamin when it cannot be synthesized in sufficient quantities by an organism, and must be obtained from the diet. Thus, the term is conditional both on the circumstances and on the particular organism. For example, ascorbic acid is a vitamin for humans, but not for most other animals, and biotin and vitamin D are required in the human diet only in certain circumstances. By convention, the term vitamin includes neither other essential nutrients, such as dietary minerals, essential fatty acids, or essential amino acids nor the large number of other nutrients that promote health but are otherwise required less often. Thirteen vitamins are universally recognized at present. Vitamins are classified by their biological and chemical activity, not their structure. Thus, each "vitamin" refers to a number of vitamer compounds that all show the biological activity associated with a particular vitamin. Such a set of chemicals is grouped under an alphabetized vitamin "generic descriptor" title, such as "vitamin A", which includes the compounds retinal, retinol, and four known carotenoids. Vitamers by definition are convertible to the active form of the vitamin in the body, and are sometimes inter-convertible to one another, as well.

Editors Contribution(0.00 / 0 votes)Rate this definition:

1. vitamin

   A type of substance.

   Vitamins are created naturally by nature and occur naturally within the body.

   Submitted by MaryC on March 28, 2020  

British National Corpus

1. Nouns Frequency

   Rank popularity for the word 'vitamin' in Nouns Frequency: #2538

How to pronounce vitamin?

1. 

   Alex

   US English

   

   Daniel

   British

   

   Karen

   Australian

   

   Veena

   Indian

How to say vitamin in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of vitamin in Chaldean Numerology is: 4

2. Pythagorean Numerology

   The numerical value of vitamin in Pythagorean Numerology is: 7

Examples of vitamin in a Sentence

1. Margarita Rohr:

   Vitamin B12 deficiency can be caused by a poor diet, so aim to get more lean meat, fish, and dairy into your meals. But sometimes low levels are triggered by an absorption issue. If your diet is high in B12 but you shiver all the time, check in with your doctor for a vitamin B12 test. RELATED : 21 Important Facts About Vitamin B12 Deficiency You're a woman Find yourself in a constant battle with your spouse or male officemates for control of the thermostat ? Turns out that feeling cold really is a gendered condition. In general, women are better at conserving heat than men.

2. Rita Redberg:

   There were no clinical benefits seen in either low dose or high dose vitamin D for bone health, i would recommend not starting vitamin D supplementation, or stopping Vitamin D if you have started.

3. Jim White:

   Beta-carotene has been proven to improve a person’s skin and decrease wrinkles, it’s also converted to vitamin A in the body. Vitamin A is essential for healthy vision. 1 cup of pumpkin contains 200 percent more vitamin A than the RDI (recommended dietary intake).

4. Lisa Cimperman:

   Eggs, in general, are also good sources of B vitamin, thiamine is one example, and selenium, which is an antioxidant, and folate is a good vitamin, particularly for pregnant women.

5. Simon Mays:

   Our study shows that vitamin D deficiency is far from being a new problem -- even 2,000 years ago people, especially babies, were at risk.

Images & Illustrations of vitamin

Popularity rank by frequency of use