i Register
In some senses, bacteria is marked as derogatory, slang, dated, US. Watch for register when choosing this word.
noun
A type, species, or strain of bacterium.
Anaerobic bacteria function in the absence of oxygen, where as aerobic bacteria require sunlight and also oxygen. Both these bacterias are capable of breaking down the organic matter […]
Alternative form of bacterium.
Lowlife, slob (could be treated as plural or singular).
noun
An oval bacterium, as distinguished from a spherical coccus or rod-shaped bacillus.