Mature and moving programme (6)
I believe the answer is:
agenda
'programme' is the definition.
(I know that agenda is a type of programme)
'mature and moving' is the wordplay.
'mature' becomes 'age' (synonyms).
'moving' indicates anagramming the letters.
'and' anagrammed gives 'nda'.
'age'+'nda'='AGENDA'
(Other definitions for agenda that I've seen before include "Items for discussion at committee meeting" , "List of matters to be discussed at a meeting" , "Meet to discuss this" , "Topic list for meeting" , "List of items to be dealt with" .)