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probiotic

[proh-bahy-ot-ik] /ˌproʊ baɪˈɒt ɪk/
noun
1.
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.
2.
a bacterium in such a food or dietary supplement.
adjective
3.
noting or pertaining to a probiotic:
a probiotic yogurt drink.
Origin
1950-1955
1950-55; pro-1 + biotic, on the model of antibiotic
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for pro-biotic

probiotic

/ˌprəʊbaɪˈɒtɪk/
noun
1.
a harmless bacterium that helps to protect the body from harmful bacteria
2.
a substance that encourages the growth of natural healthy bacteria in the gut
adjective
3.
of or relating to probiotics: probiotic yogurt
Word Origin
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
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