CD-R(redirected from Disc-at-once)
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(Electronics) compact disc recordable: a compact disc that can be used to record only once. Compare CDE
a compact disc onto which data can be written but not erased or modified.
[1985–90; C(ompact) D(isc)-R(ecordable)]
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|Noun||1.||CD-R - a compact disc on which you can write only once and thereafter is read-only memory|