Definition of microbion in US English:

microbion

noun

Biology
  • Microbe. Usually in plural.

Origin

Late 19th century; earliest use found in Science. From micro- + ancient Greek βίο- bio- + -ον, neuter singular ending, as re-formation of microbe.

Pronunciation

microbion

/mʌɪˈkrəʊbɪən/