cd
nounUK /ˌsiː ˈdiː/
US /ˌsiː ˈdiː/
A small round disc that holds music or other sounds.
She put the cd in the player to hear her favorite songs.
OTHER MEANINGS
2. A unit of measurement for how bright a light is.
The lamp gives off about 800 cd of light.
3. A short way to write the word 'could' in text messages.
cd u help me later?
4. A certificate of deposit, money saved in a bank for a set time.
He put his savings in a cd at the bank.