ancient history

American  

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.

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ancient history British  

noun

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

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ancient history Idioms  

1. 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.

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Etymology

Origin of ancient history

First recorded in 1585–95

Example Sentences

"POV: You wake up in Pompeii on eruption day" and "POV: You wake up as Queen Cleopatra" are some of his most popular titles, taking viewers through a 30-second-long fictionalised day in ancient history.

From BBC

One explanation is that by the time that research is submitted, accepted and presented, it can be several months old, which the frontier labs now consider ancient history.

From The Wall Street Journal

But the delayed retail-sales report, expected on Nov. 25, will cover September, which now seems like “ancient history,” said Kelly.

From MarketWatch

World War One seemed like ancient history in my childhood imagination, even though I was born only 40 years after the signing of the Treaty of Versailles.

From BBC

The implications of these findings extend far beyond understanding ancient history.

From Science Daily