Definition of postosmication in US English:

postosmication

noun

Biology
  • Postfixation with a solution of osmium tetroxide.

Origin

1930s; earliest use found in Proceedings of the Royal Society of London. From post- + osmication, after postosmicate.

Pronunciation

postosmication

/ˌpəʊstɒzmɪˈkeɪʃn/