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compact disc recordable

noun
1.
the full name for CDR
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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compact disc recordable in Technology
storage
(CD-R) A write-once version of CD-ROM. CD-Rs can hold about 650 megabytes of data. They are very durable and can be read by normal CD-ROM drives, but once data has been written it cannot be altered.
Standard prerecorded CDs have their information permanently stamped into an aluminium reflecting layer. CD-R discs have a dye-based recording layer and an additional golden reflecting layer.
Digital information is written to the disc by burning (forming) pits in the recording layer in a pattern corresponding to that of a conventional CD.
The laser beam heats the substrate and recording layer to approximately 250 C. The recording layer melts and the substrate expands into the space that becomes available.
Phillips: New Technologies (http://www-us.sv.philips.com/newtech/cdrewritable.html).
See also CD-RW and DVD-RAM.
(1999-08-01)
The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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