Mushroom cloud ultimately can't be reduced? (8)
I believe the answer is:
enlarged
'reduced?' is the definition.
Both the answer and definition are adjectives. Perhaps they are linked in a way I don't understand?
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for enlarged that I've seen before include "Made bigger, say photo" , "Increased, augmented" , "Bloated" , "Expanded, amplified" , "Made greater" .)