Definition from Wiktionary, the free dictionary
- call detail record: a computer record representing a unit of traffic handled by a telephone exchange.
- common data rate
- content of decrement of register:
cdris a Lisp (and Scheme) instruction, that has become a verb in the MIT: "to cdr down" means to evaluate the items of a list one by one.
- (ophthalmology) cup-to-disc ratio