Deletion of On-demand scan

Comment: non-notable term;  
Stance: delete
Cited policy: Wikipedia:Wikipedia is not a dictionary (WP:DICDEF||WP:GNG)

Comment: This is just a definition of the expression, so ikipedia is not a dictionary applies.  The information should be given in articles on virus protection, etc
Stance: delete
Cited policy: Help:Watchlist (WP:W)