vitamin B

noun

1
: vitamin b complex
2
or vitamin B1
-ˈbē-ˈwən How to pronounce vitamin B (audio)
: thiamine

Examples of vitamin B in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Both groups also took a vitamin B complex. — Michele Laufik, Martha Stewart, 26 June 2026 Both groups also took a vitamin B complex. — Sandee Lamotte, CNN Money, 18 June 2026 Energy refreshers are made naturally with a blend of vitamin B and caffeine. — Greta Cross, USA Today, 7 Apr. 2026 Lucky for me, its unique combination of marshmallow root extract, hyaluronic acid, and vitamin B leaves my hair feeling soft and shiny without any greasy residue. — Catharine Malzahn, Glamour, 18 Mar. 2026 See All Example Sentences for vitamin B

Word History

First Known Use

circa 1920, in the meaning defined at sense 1

Time Traveler
The first known use of vitamin B was circa 1920

Rhymes for vitamin B

See All Rhymes for vitamin B

Browse Nearby Words

vitamin A
vitamin B
vitamin B complex
See all Nearby Words

Cite this Entry

“Vitamin B.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/vitamin%20B. Accessed 7 Jul. 2026.

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Kids Definition

vitamin B

noun
1
: vitamin b complex
2
: thiamine

Medical Definition

vitamin B

noun
1
: vitamin b complex
2
: any of numerous members of the vitamin B complex
especially : thiamine
Last Updated: - Updated example sentences
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