No longer being incorporated in revised text (7)
I believe the answer is:
extinct
'no longer being incorporated in revised text' is the definition.
I can't judge whether this defines the answer.
'incorporated in revised text' is the wordplay.
'incorporated' becomes 'inc'.
'in' is an insertion indicator.
'revised' indicates anagramming the letters.
'text' is an anagram of 'extt'.
'inc' placed inside 'extt' is 'EXTINCT'.
Can you help me to learn more?
(Other definitions for extinct that I've seen before include "Like a dodo" , "(Of a volcano) dead" , "killed off completely" , "Dead (as a dodo?)" , "Having died out, animal species or volcano" .)