Webster’s Revised Unabridged Dictionary · 1913
Prochronism
Pro′chro·nism (prō′krō·nĭz'm), n. [Gr. πρόχρονος preceding in time; πρό before + χρόνος time: cf. F. prochronisme.] The dating of an event before the time it happened; an antedating; — opposed to metachronism.