MiniDisc; MD
Refers to the magneto-optical disc format introduced by Sony, commonly used for audio recording in the 1990s and early 2000s.
彼はまだミニディスクで音楽を聴いている。
He still listens to music on MiniDisc.
ミニディスクはCDより小さくて、録音もできる。
MiniDiscs are smaller than CDs and can also be recorded on.
I recorded my favorite songs onto a MiniDisc.
昔はよくミニディスクで音楽を聞いていた。
I used to listen to music on MiniDiscs a lot back then.
ミニディスク is counted with 枚, the counter used for thin, flat objects like discs.
From English 'MiniDisc', a trademarked format name.