anachronism

An anachronism is something that is out of place in terms of time or chronology. The word derives from chronos, the Greek word for "time," and ana-, a Greek prefix meaning "up," "back," or "again." When it was first used in English in the 17th century, anachronism referred to an error in the dating of something (as, for example, in etymology, when a word or use is mistakenly assumed to have arisen earlier than it did). Anachronisms were sometimes distinguished from parachronisms, chronological errors in which dates are set later than is correct. But parachronism did not stand the test of time. It is now a very rare word.