WordReference Random House Learner's Dictionary of American English © 2026
mi•crobe /ˈmaɪkroʊb/USA pronunciation
n. [countable]
WordReference Random House Unabridged Dictionary of American English © 2026- Microbiologya microorganism, esp. a disease-causing bacterium.
mi•crobe
(mī′krōb),USA pronunciation n.
mi′crobe•less, adj.
mi•cro′bi•al, mi•cro′bic, mi•cro′bi•an, adj.
- Microbiologya microorganism, esp. a pathogenic bacterium.
- Greek mīkro- micro- + bíos life
- French
- 1880–85
mi•cro′bi•al, mi•cro′bic, mi•cro′bi•an, adj.
'microbial' also found in these entries (note: many are not synonyms or translations):