vitamin B

noun

1

: vitamin b complex

2

or vitamin B₁

-ˈbē-ˈwən 

: thiamine

Examples of vitamin B in a Sentence

Recent Examples on the Web

This veggie is also a good source of vitamin C, iron, vitamin B, protein, and fiber, often serving as a protein replacement for people who follow vegetarian diets.16 10. —Cristina Mutchler, Verywell Health, 9 May 2025

Look to the key vitamins found in the bouncy formula, including vitamin A (retinol), vitamin B (niacinamide), and vitamin C (yuzu extract). —Sarah Han, Allure, 25 Apr. 2025

Oysters, Clams, and Mussels Oysters, clams, and mussels are good foods to increase vitamin B intake. —Julie Marks, Verywell Health, 21 Feb. 2025

This cream incorporates hyaluronic acid to lock in hydration and a compound called DMAE, a vitamin B derivative that can help to smooth skin’s texture. —Korin Miller, Flow Space, 28 Mar. 2025

Word History

First Known Use

circa 1920, in the meaning defined at sense 1

Rhymes for vitamin B

• abc
• absentee
• addressee
• adoptee
• agouti
• allottee
• amphorae
• amputee
• apc
• apogee
• appointee
• assessee

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