Mature as a sphere? (7)
I believe the answer is:
rounded
'mature' is the definition.
Both the answer and definition are adjectives. Maybe there's a link between them I don't understand?
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for rounded that I've seen before include "Plump" , "Complete and balanced; made curved" , "full" , "(Of the lips) pursed" , "Well-developed; curved" .)