Deletion (7)
I believe the answer is:
erasure
'deletion' is the definition.
(erasure is a kind of deletion)
This is the entire clue.
(Other definitions for erasure that I've seen before include "Process of rubbing out" , "Band with Andy Bell and Vince Clarke, or wipe-out" , "Obliteration of data" , "group from the 80s" , "Removal" .)