thi·​a·​mine | \ ˈthī-ə-mən How to pronounce thiamine (audio) , -ˌmēn\
variants: or thiamin \ ˈthī-​ə-​mən How to pronounce thiamin (audio) \

Definition of thiamine

: a vitamin C12H17N4OSCl of the vitamin B complex that is essential to normal metabolism and nerve function and is widespread in plants and animals

called also vitamin B1

Examples of thiamine in a Sentence

Recent Examples on the Web

The Impossible Burger also beats beef in many vitamin and mineral categories, including folate, B12, thiamine and iron. Savannah Eadens, The Courier-Journal, "Looking for the Impossible Burger in Louisville? We made it possible," 17 May 2017 Mushrooms are rich in B vitamins: riboflavin [B2], folate [B9], thiamine [B1], pantothenic acid [B5], and niacin [B3]. Lisa Mulcahy, Good Housekeeping, "6 Surprising Mushroom Health Benefits for Your Skin, Brain, and Bones," 3 June 2019 The paper names 12 nutrients key to managing depression and anxiety: folate (vitamin B9), iron, long-chain omega-3 fatty acids, magnesium, potassium, selenium, thiamine (vitamin B1), vitamin A, vitamin B6, vitamin B12, vitamin C and zinc. Kathleen Squires, WSJ, "Feed Your Head: Foods That Target Depression and Anxiety," 26 July 2018 Some people swear by certain types of vitamin B, including thiamine (B1), an excess of which is excreted through the skin and is said to repel mosquitoes. Heidi Mitchell, WSJ, "Is There an Alternative Way to Prevent Bug Bites?," 28 July 2018 While fresh peas are a good source of fiber, thiamine, folate, manganese, and vitamins A, C, and K, one cup of green peas contains 8.6 grams of protein, less than half of what you’d get from a serving of some of the most common pea protein powders. Sara Angle, Outside Online, "Pea Protein Is the Best Protein," 19 June 2018 Plus, kidney beans are highest in thiamine, a nutrient that may be protective against Alzheimer's disease. The Editors Of Organic Life, Good Housekeeping, "6 Healthiest Beans You Can Eat," 15 Aug. 2016

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

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First Known Use of thiamine

1937, in the meaning defined above

History and Etymology for thiamine

thiamine alteration of thiamin, from thi- + -amin (as in vitamin)

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Statistics for thiamine

Last Updated

1 Aug 2019

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The first known use of thiamine was in 1937

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English Language Learners Definition of thiamine

: a natural substance (called a vitamin) that is found in certain foods and that helps your body to be healthy


variants: also thiamin \ ˈthī-​ə-​mən \

Kids Definition of thiamine

: a type of vitamin B that is used by the body to convert carbohydrates into energy and to maintain normal nerve function


thi·​a·​mine | \ ˈthī-ə-mən, -ˌmēn How to pronounce thiamine (audio) \
variants: or thiamin \ -​mən How to pronounce thiamin (audio) \

Medical Definition of thiamine

: a vitamin C12H17N4OSCl of the vitamin B complex that is an amino hydroxy quaternary ammonium water-soluble salt containing a thiazole ring and a pyrimidine ring, that occurs widely both free (as in the germs of cereals and hulls of grain) and combined (as in yeast and in animal tissues like liver, kidneys, and heart) but is usually synthesized commercially, that functions in the body as a cocarboxylase and is essential for carbohydrate metabolism and for normal functioning of the nervous system, and that is used in nutrition (as in vitamin preparations and in enriching flour and bread) and in medicine

called also vitamin B1

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More from Merriam-Webster on thiamine

Rhyming Dictionary: Words that rhyme with thiamine

Spanish Central: Translation of thiamine

Nglish: Translation of thiamine for Spanish Speakers Encyclopedia article about thiamine

Comments on thiamine

What made you want to look up thiamine? Please tell us where you read or heard it (including the quote, if possible).


not constant or steady

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