thiamine

noun

thi·​a·​mine ˈthī-ə-mən 

-ˌmēn

variants or thiamin

ˈthī-ə-mən 

: 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

Whole Grains Eating whole grains can boost vitamin B. Whole-grain bread is a good source of thiamine. —Julie Marks, Verywell Health, 21 Feb. 2025

There are a series of vitamins found in eggs, including vitamins A, B12, D, E, biotin, riboflavin and thiamine. —Olivia Munson, USA TODAY, 30 Jan. 2025

Messer adds that many varieties of instant ramen also provide micronutrients like thiamine and riboflavin, which can be good for immune health, digestive health, and skin health. —Daryl Austin, USA TODAY, 2 Jan. 2025

Helps with Pregnancy The B vitamins folate, riboflavin, and thiamine play key roles in pregnancy health, and all are found in green beans. —Cristina Mutchler, Verywell Health, 5 Dec. 2024

Word History

Etymology

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

First Known Use

1937, in the meaning defined above

Rhymes for thiamine

• thiamin
• indiaman

Kids Definition

thiamine

noun

thi·​a·​mine ˈthī-ə-ˌmən 

-mēn

variants also thiamin

-mən 

: a vitamin of the B complex that is necessary for normal metabolism and nerve function and is found in many plants and animals

called also vitamin B₁

Medical Definition

thiamine

noun

thi·​a·​mine ˈthī-ə-mən, -ˌmēn 

variants or thiamin

-mən 

: 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