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

Like Connolly, Joseph decided to use ByHeart formula because it was advertised as organic, with whole milk, probiotics, and prebiotics. —Sarah Todd, STAT, 18 June 2026

These pieces contain a blend of vitamins, minerals, probiotics and antioxidants for all-around canine health and well-being. —Bestreviews, Mercury News, 17 June 2026

Many then offer a personalized roadmap of foods to eat, foods to avoid and probiotics to buy, with aspirational pitches around better digestion, energy, weight, mood and even longevity. —Ryan Brennan, Fort Worth Star-Telegram, 17 June 2026

Reports promise a clear verdict on whether your gut is balanced, then hand you a roadmap of foods to eat, foods to skip and probiotics to buy. —Ryan Brennan, Miami Herald, 17 June 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