Definition of prokaryon in US English:

prokaryon

noun

Biology
  • 1The region of a prokaryotic cell where the genetic material is located. Compare nucleoid. rare.

  • 2Prokaryote (rare). Also (in plural, in form Prokarya): a taxonomic group comprising the prokaryotes, coextensive with Prokaryota.

Origin

1950s. From pro- + -karyon. Compare prokaryotic and later prokaryote.

Pronunciation

prokaryon

/prəʊˈkarɪən/