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

The technology’s blend of active probiotics produces a range of enzymes that break down various allergens. —Alexandra Harrell, Sourcing Journal, 15 Jan. 2026

Kombucha is a probiotic drink made by fermenting tea with probiotics. —Merve Ceylan, Health, 15 Jan. 2026

Shah recommends starting your day with 30 grams of protein at breakfast, followed by 30 grams of fiber and three probiotics throughout the day. —Alexa Mikhail, Flow Space, 14 Jan. 2026

Some research shows probiotics might cause more symptoms or even prolong certain health conditions. —Amber J. Tresca, Verywell Health, 13 Jan. 2026

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