cdr

from The Collaborative International Dictionary of English v.0.48

CD-R \CD-R\ n. [from Compact Disk-Recordable.]
   a recordable compact disk; a compact disc on which you can
   write only once and thereafter is read-only.

   Syn: compact disc recordable, CD-WO, compact disc write-once.
        [WordNet 1.5]

from Jargon File (4.4.4, 14 Aug 2003)

cdr
 /ku'dr/, /kuh'dr/, vt.

   [from LISP] To skip past the first item from a list of things
   (generalized 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 704 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.

from The Free On-line Dictionary of Computing (8 July 2008)

cdr

   <programming> /ku'dr/ or /kuh'dr/ The {LISP} operation that
   returns the right-hand node of a {binary tree} structure.  In
   the typical case where the tree is used to store a list, the
   cdr is the tail of the list, i.e. all but the first element.

   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".

   [{Jargon File}]

   (2007-02-28)

from The Free On-line Dictionary of Computing (8 July 2008)

Committed Data Rate
CDR

   <communications> (CDR) The data transfer rate that an {ISP}
   guarantees a {virtual circuit} will carry.  The CDR is the
   data portion of {Committed Information Rate} (CIR).

   (2007-02-28)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

CDR
       Compact Disk - Recordable (CD), "CD-R"

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

CDR
       Contents of the Decrement Register (IBM, ELISP, CAR)