CD-WO

A CD-R (Compact Disc-Recordable) is a variation of the Compact Disc invented by Philips and Sony. CD-R is a Write Once, Read Many optical medium (though the whole disk does not have to be entirely written in the same session) and retains a high level of compatibility with standard CD readers (unlike CD-RW which can be rewritten but has much lower compatibility and the discs are considerably more expensive). Some people jokingly refer to these media as CD-PROM since they are the optical analogy to Programmable read-only memory.
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Noun
1. a compact disc on which you can write only once and thereafter is read-only memory
(synonym) CD-R, compact disc recordable, compact disc write-once
(hypernym) compact disk, compact disc, CD

COMPACT DISK - WRITE ONCE. CD-WO