n.1 a the attribution of a custom, event, etc., to a period to which it does not belong. b a thing attributed in this way.
2 a anything out of harmony with its period. b an old-fashioned or out-of-date person or thing.
Derivatives:
anachronistic adj. anachronistically adv.
Etymology: F anachronisme or Gk anakhronismos (as ANA-, khronos time)