[gre]

Fun fact, the D stood for disks, so you're literally saying "Compact Disks Disks".

[YeGoblynQueenne]

I'm fine with that. Like "SAM Missiles" (in the sky) or "CMS System" etc.

Also, it's "pedant", not "pendant" :P

[myself248]

The D stood for Disc.

Consensus at the time was a disk with a K was writable, a disc with a C was read-only.

[smegcicle]

Or disc for optical, disk for magnetic