New advancement starting to develop (7)
I believe the answer is:
nascent
'starting to develop' is the definition.
(I've seen this before)
'new advancement' is the wordplay.
'new' becomes 'n'.
'advancement' becomes 'ascent' (I've seen this before).
'n'+'ascent'='NASCENT'
(Other definitions for nascent that I've seen before include "Sent can (anag.)" , "Starting existence" , "Budding early" , "being coined" , "Emerging, in the process of being born" .)