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Noun: bacterium (bacteria)  bak'teer-ee-um
  1. (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 to be plants
    - bacteria

Derived forms: bacteria

Type of: microorganism, micro-organism

Encyclopedia: Bacterium