[ proh-bahy-ot-ik ]
/ ˌproʊ baɪˈɒt ɪk /


a usually dairy food or a dietary supplement containing live bacteria that replace or add to the beneficial bacteria normally present in the gastrointestinal tract.
a bacterium in such a food or dietary supplement.


noting or pertaining to a probiotic: a probiotic yogurt drink.

Nearby words

  1. probe,
  2. probe syringe,
  3. probenecid,
  4. probie,
  5. probiosis,
  6. probit,
  7. probity,
  8. problem,
  9. problem page,
  10. problem-oriented record

Origin of probiotic

1950-55; pro-1 + biotic, on the model of antibiotic Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for probiotic

British Dictionary definitions for probiotic


/ (ˌprəʊbaɪˈɒtɪk) /


a harmless bacterium that helps to protect the body from harmful bacteria
a substance that encourages the growth of natural healthy bacteria in the gut


of or relating to probioticsprobiotic yogurt

Word Origin for probiotic

C20: from pro- 1 + (anti) biotic

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012