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Webster 1913 Edition

Noun.

[Gr. [GREEK], [GREEK], after the time, happening afterward; [GREEK] beyond + [GREEK] time: cf. F.

métachronisme

An error committed in chronology by placing an event after its real time.

Noun.

[Gr. beyond, and time.] An error in chronology, by placing an event after its real time.

metachronism ‎(plural metachronisms)

An error in chronological ordering in which a character or an event is placed at too late a time.

error

metachronism in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913