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Definition of CDR
1. Initialism. call detail record: a computer record representing a unit of traffic handled by a telephone exchange. ¹
2. Initialism. common data rate ¹
3. Initialism. content of decrement of register: cdr
is 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. ¹
4. Initialism. (context ophthalmology) w:cup-to-disc ratio cup-to-disc ratio ¹
5. Noun. (computing) The second part of a cons in LISP. The rest of a list when the first element is removed. ¹
¹ Source: wiktionary.com