vitamin B1

American

noun

thiamine.

vitamin B1 British

noun

another name for thiamine

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

vitamin B1 Scientific

See thiamine

Etymology

Origin of vitamin B1

First recorded in 1920–25

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

For decades, scientists believed that vitamin B1, also known as thiamine, might briefly form a carbene-like structure inside cells to help drive essential biochemical reactions.

From Science Daily • Apr. 11, 2026

A 300-gram bowl of rice from this crop provides around a third of the recommended daily intake of vitamin B1 for an adult.

From Science Daily • Apr. 11, 2024

The scientists generated rice lines that express a gene that sequesters vitamin B1 in a controlled manner in the endosperm tissues.

From Science Daily • Apr. 11, 2024

The disease, which is caused by a deficiency of vitamin B1, also known as thiamine, is preventable and reversible.

From Los Angeles Times • Nov. 7, 2023

Thus, cocarboxylase A, which takes part in the separation of carbon dioxide from an intermediate fermentation product, is the phosphate of vitamin B1.

From History of Phosphorus by Farber, Eduard

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023