cd

US /ˌsiːˈdiː/
UK /ˌsiːˈdiː/
"cd" picture
1.

CD, コンパクトディスク

a small plastic disc on which music or other digital information is stored, and from which it can be read using a laser

:
I bought a new music CD yesterday.
昨日新しい音楽CDを買いました。
Do you still listen to music on CDs?
まだCDで音楽を聴きますか?