1. [ noun ] (microbiology) single-celled or noncellular spherical or spiral or rod-shaped organisms lacking chlorophyll that reproduce by fission; important as pathogens and for biochemical properties; taxonomy is difficult; often considered plants
Synonyms: bacterium
Related terms: microorganism rod legionella penicillin-resistant_bacteria bacteroid acidophil rickettsia calymmatobacterium gonococcus nitrobacterium francisella bacteroid diplococcus gram-negative microphage peritrichous resistance bioremediation gram-positive microbiology
Similar spelling:   bacterial