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.
These stains provide larvae with nutrients, such as vitamin B and salt. — Nafeesah Allen, Better Homes & Gardens, 10 July 2026 This two-in-one shampoo and conditioner set is rich in rice protein, vitamin B, and vitamin C to strengthen and thicken the hair shaft, while nourishing the scalp. — Tessa Petak, InStyle, 4 July 2026 The supplement blend focuses on vitamin B and vitamin D, a nutrient Monaghan recognizes many people commonly lack. — Mara Santilli, Flow Space, 2 July 2026 Both groups also took a vitamin B complex. — Michele Laufik, Martha Stewart, 26 June 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 14 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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