ancient history

ancient history

noun
1.
the study or a course of study of history before the end of the Western Roman Empire a.d. 476.
2.
information or an event of the recent past that is common knowledge or is no longer pertinent: Last week's news is ancient history.
3.
an event, as in a person's life, that occurred in the remote past and has no practical relationship with the present: She was my best friend in high school, but that's ancient history now.

Origin:
1585–95

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
ancient history
 
n
1.  the history of the ancient world from the earliest known civilizations to the collapse of the Western Roman Empire in 476 a.d
2.  informal a recent event or fact sufficiently familiar to have lost its pertinence

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Slang Dictionary

ancient history definition


  1. n.
    someone or something completely forgotten, especially past romances. (See also history.) : That business about joining the army is ancient history.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition.
Copyright 2007. Published by McGraw-Hill Education.
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American Heritage
Idioms & Phrases

ancient history

A past event, as in She's talking about her sea voyage, but that's ancient history, or And then there was his divorce, but you don't want to hear ancient history. This hyperbolic idiom transfers the field of ancient history to a much-repeated tale.

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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