D defs.my
Entry 1 sense Webster, 1913

Prochronism

· Pro·chro·nism · IPA /ˈpɹoʊkɹənɪz(ə)m/
01 n. The dating of an event before the time it happened; an antedating; -- opposed to metachronism.
  1. 1.
    The dating of an event before the time it happened; an antedating; -- opposed to metachronism.