Exploding sun, delicate and magical kind (9)
I believe the answer is:
unselfish
'kind' is the definition.
(I've seen this before)
'exploding sun delicate and magical' is the wordplay.
'exploding' indicates an anagram.
'delicate and magical' becomes 'elfish'.
'sun' is an anagram of 'uns'.
'uns'+'elfish'='UNSELFISH'
(Other definitions for unselfish that I've seen before include "He's sinful, being altruistic" , "Altruistic, not concerned with own interests" , "concerned for others?" , "Considering others before oneself" , "Altruistic, philanthropic" .)