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Meaning of prochronism

pro•chro•nism

Pronunciation: (prō'kru-niz"um, prok'ru-), [key]
— n.
  1. a chronological error in which a person, event, etc., is assigned a date earlier than the actual one; prolepsis. Cf.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.