Term: brucella: an aerobic Gram-negative coccobacillus that causes brucellosis; can be used as a bioweapon
Broader: bacteria: (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 | Unrelated: emu: large Australian flightless bird similar to the ostrich but smaller