Appearing (7)
(Other definitions for nascent that I've seen before include "Starting to grow" , "Beginning to show signs of potential" , "Coming alive" , "Freshly generated" , "Newly-formed" .)
'appearing' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for emergent that I've seen before include "making an appearance" , "Greet men (anag) - developing" , "Rising" , "In the process of coming into prominence" , "Coming into existence" .)