probiotic

noun

pro·​bi·​ot·​ic prō-bī-ˈä-tik 

-bē-ˈä-

: a microorganism (such as lactobacillus) that when consumed (as in a food or a dietary supplement) maintains or restores beneficial bacteria to the digestive tract

also : a product or preparation that contains such microorganisms compare prebiotic

probiotic adjective

Examples of probiotic in a Sentence

Recent Examples on the Web

Greek Yogurt Fuel up on protein, calcium, and probiotics with Greek yogurt. —Kirsten Nunez, Martha Stewart, 5 June 2026

One of the most important factors in choosing a probiotic is choosing the right probiotic strain for your needs. —Emmanuella Ogbonna, Health, 5 June 2026

Gummies for sleep, but don’t forget your probiotics for digestion. —Kate Hardcastle, Forbes.com, 27 May 2026

Greek yogurt provides probiotics, calcium, and other vitamins. —Sohaib Imtiaz, Verywell Health, 27 May 2026

Word History

Etymology

pro- entry 2 + -biotic (as in antibiotic)

First Known Use

1974, in the meaning defined above

Rhymes for probiotic

• aprotic
• aquatic
• biotic
• chaotic
• cirrhotic
• demotic
• despotic
• dichotic
• erotic
• euphotic
• exotic
• fibrotic

Medical Definition

probiotic

noun

pro·​bi·​ot·​ic prō-bī-ˈät-ik, -bē- 

: a microorganism (such as lactobacillus or bifidobacterium) that when consumed (as in a food or a dietary supplement) maintains or restores beneficial bacteria to the digestive tract

also : a product or preparation that contains such microorganisms compare prebiotic

probiotic adjective