plural noun, singular pro·pi·on·i·bac·te·ri·um [proh-pee-on-uh-bak-teer-ee-uh m, -oh-nuh-] /ˌproʊ piˈɒn ə bækˈtɪər i əm, -ˈoʊ nə-/. Bacteriology.
aerobic or anaerobic bacteria of the genus Propionibacterium, found in dairy products, especially hard cheeses where certain species are associated with the ripening process.
Origin of propionibacteria
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
A genus of saphrophytic nonmotile gram-positive bacteria, usually anaerobic, that occur in dairy products, on the skin, and in the intestinal tract; certain species may be pathogenic.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.