CDR

compact disk that may be written on (Computers)

CDR may refer to: Technology CD-R, a recordable compact disc format.cdr, the file extension for the CorelDRAW drawing file, and for the Raw Audio-CD data fileCDR (see CAR and CDR), the primitive operation on linked lists in Lisp-like programming languagesCall detail recordCorporate data repositoryCommon Data RepresentationClock recovery, electronic device used for recovering clock and data from a serial stream
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Commander is a military rank which is also sometimes used as a military title depending on the individual customs of a given military service. Commander is also used as a rank or title in some organizations outside of the military, particularly in police and law enforcement.
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CorelDRAW is a vector graphics editor developed and marketed by Corel Corporation of Ottawa, Canada. It is also the name of Corel's Graphics Suite. Its latest version, named X3 (actually version 13), was released in January 2006.
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cdr, file extension (Computers)

Abbreviation for call detail recording.

A service feature in which call data on a specific telephone extension or group of subscribers are collected and recorded for cost-of-service accounting purposes.

/ku'dr/ or /kuh'dr/ [LISP] To skip past the first item from a list of things (generalised from the LISP operation on binary tree structures, which returns a list consisting of all but the first element of its argument). In the form "cdr down", to trace down a list of elements: "Shall we cdr down the agenda?" Usage: silly. See also loop through.
Historical note: The instruction format of the IBM 7090 that hosted the original LISP implementation featured two 15 bit fields called the "address" and "decrement" parts. The term "cdr" was originally "Contents of Decrement part of Register". Similarly, "car" stood for "Contents of Address part of Register".
The cdr and car operations have since become bases for formation of compound metaphors in non-LISP contexts. GLS recalls, for example, a programming project in which strings were represented as linked lists; the get-character and skip-character operations were of course called CHAR and CHDR.
[Jargon File]
(2001-06-22)