Definition of bacteria:
- microorganism (part of speech: noun)
- microorganisms (part of speech: noun)
- "An Introduction to Chemical Science", R.P. Williams.
- "Thomas Henry Huxley; A Sketch Of His Life And Work", P. Chalmers Mitchell.
The janitor's duties, the Board of Health's duties, the milkman's duties, resting upon each one of us individually with the accumulated weight of every cubic foot of vitiated air, and multiplied by the number of bacteria in every cubic centimeter of milk.- "Humanly Speaking", Samuel McChord Crothers.