What does CD stand for?

Countdown

 A count in inverse numerical order, in hours, minutes and finally seconds, of time remaining before the launch of a rocket.

Central Database

Communications Division

Convergencia Democrática

Corps Diplomatic

Crossdresser (transvestite, drag)

Cyber Dad

Congo Dem. Rep of the

Kinshasa

Canavan disease

Canavan disease, also called Canavan–van Bogaert–Bertrand disease, is an autosomal recessive degenerative disorder that causes progressive damage to nerve cells in the brain, and is one of the most common degenerative cerebral diseases of infancy. It is caused by a deficiency of the enzyme aminoacylase 2, and is one of a group of genetic diseases referred to as a leukodystrophies.