Adrian taken badly with temperature, glowing (7)
I believe the answer is:
'glowing' is the definition.
(I've seen this before)
'adrian taken badly with temperature' is the wordplay.
I cannot quite understand how this works, but
an anagram of 'adrian' is 'radian' which is within the answer.
'temperature' could be 't' (abbreviation) and 't' is present in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for radiant that I've seen before include "Dazzling" , "Brightly glowing" , "'Glorious, shining (7)'" , "Sending out light, glowing" , "Beautiful" .)