Meanings
How to pronounce "ancient history":
AU
A period of history generally seen as occurring before the Middle Ages, that is, before the fall of the Roman Empire. Includes Ancient Egypt, Ancient Greece and Ancient Rome.
That which happened a long time ago and not worth discussing any more.
Example: "Who cares if he said those things at the beginning of the year? That's ancient history now."
Example Sentences
1
That embarrassing incident from last year is ancient history now.
2
The conflict between the two families is ancient history; they have made peace.
3
His college days are ancient history; he rarely even thinks about them anymore.
4
The technology they used in the early 2000s seems like ancient history now.
5
The story of how the city was founded is ancient history, passed down through generations.