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

With 5 probiotics, 13 digestive enzymes, pomegranate, and herbs, this powerful capsule tackles digestion from a 360-degree approach. —Brianna Peters, Vogue, 21 Apr. 2025

Surprisingly, probiotics may also impact allergies. —Sarah Cottone, Health, 16 Apr. 2025

These ‘good’ bacteria, also known as probiotics, may play a key role in maintaining a healthy balance in your gut, which affects digestion, immunity, and even mood. —Jess Cording, Forbes.com, 13 Apr. 2025

Does the Food and Drug Administration regulate cat probiotics? —Bestreviews, Chicago Tribune, 4 Apr. 2025

Word History

Etymology

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

First Known Use

1974, in the meaning defined above

Rhymes for probiotic

• abiotic
• aeronautic
• apoptotic
• asymptotic
• cyanotic
• eukaryotic
• idiotic
• meiotic
• patriotic
• prebiotic
• prokaryotic
• semiotic

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