RhymeZone: cdr definitions

Definitions of cdr:

noun: (programming) The second part of a cons in Lisp. The remainder of a list when the first element is removed.
noun: (telephony) Initialism of call detail record: a computer record representing a unit of traffic handled by a telephone exchange.
noun: Initialism of common data rate.
noun: (programming) Initialism of content of decrement of register; cdr.
noun: (ophthalmology) Initialism of cup-to-disc ratio.
noun: (military) Abbreviation of commander. [One who exercises control and direction of a military or naval organization.]
noun: Initialism of carbon dioxide removal.

(Definitions from Wiktionary)