Bacteria

**Semantic type:** Bacterium

**Definition:** Unicellular, prokaryotic organisms that reproduce by cell division and usually have cell walls; can be shaped like spheres, rods or spirals and can be found in virtually any environment.

**Synonyms:** - BACTERIA - Bacteria, Eubacteria - Bacterium - Bacterium - Bacterium - Eubacteria - Eubacteria - bacteria