Order cited in new order (5)
I believe the answer is:
edict
'order' is the definition.
(I know that order can be written as edict)
'cited in new order' is the wordplay.
'in new order' is an anagram indicator (I've seen this in other clues).
'cited' with letters rearranged gives 'EDICT'.
(Other definitions for edict that I've seen before include "Formal proclamation" , "Decree, fiat" , "Cited (anag) - proclamation" , "Formal announcement" , "Legally binding command" .)