Extraterrestrial bacterium Synonyms

Definitions for Extraterrestrial


  • (adjective) originating, located, or occurring outside Earth or its atmosphere
  • (noun) a form of life assumed to exist outside the earth or its atmosphere

Definitions for Bacterium


  • (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 to be plants