WordReference Random House Unabridged Dictionary of American English © 2026
pro•pi•on•i•bac•te•ri•um
(prō′pē on′ə bak tēr′ē əm, -ō′nə-),USA pronunciation n., pl. -te•ri•a (-tēr′ē ə).USA pronunciation [Bacteriol.]
- Microbiologyany of several aerobic or anaerobic bacteria of the genus Propionibacterium, found in dairy products, esp. hard cheeses where certain species are associated with the ripening process.
- Neo-Latin (1909); see propionic, bacterium
'propionibacterium' also found in these entries (note: many are not synonyms or translations):