Longman Dictionary of Contemporary English homepage

disc

noun
     
disc S3 also disk especially American English [countable]
1CF a round flat shape or object:
three keys attached to a metal disc
2TCR a compact disc
3TCR a record that you play on a record player
4TD British EnglishTD a computer disk
on disc
The report form is available on disc from Personnel.
5HBHM a flat piece of cartilage between the bones of your back:
He retired early because of a slipped disc (=one that has moved out of its correct place).

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