Revealed by stance adopted by editor (7)
I believe the answer is:
exposed
'revealed' is the definition.
(exposing is a kind of revealing)
'by stance adopted by editor' is the wordplay.
'by' becomes 'x' (multiplication sign).
'stance' becomes 'pose'.
'adopted by' is an insertion indicator (I've seen this in other clues).
'editor' becomes 'ed'.
'x'+'pose'='xpose'
'xpose' put inside 'ed' is 'EXPOSED'.
(Other definitions for exposed that I've seen before include "Like a dummy" , "Showed up" , "Made known" , "Deprived of cover" , "Deprived of protection" .)