decrunch

verb

1. (ambitransitive)To decompress (data) previously compressed by crunching.

   “Several phone calls and a borrowed Mac later, I found that the single disk sent me wouldn't in any case decrunch (uncompress its data) without a sister disk — which had gone astray across the Atlantic. Such hitches are always irritating […]”

   “The executable is still decrunched in memory, so it will _use_ some extra memory but _save_ disk space.”

   “Dear Dr. Destiny, my dictionary on CD-ROM won't decrunch, what do you recommend?”