Dismissive analysis of jewel on the counter that shows explosive power (7)
I believe the answer is:
megaton
'explosive power' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
'dismissive analysis of jewel on the counter' is the wordplay.
'dismissive analysis of' becomes 'nota' (I can't justify this - if you can you should believe this answer much more).
'jewel' becomes 'gem' (synonyms).
'on the counter' shows that the letters should be reversed in order (counter can mean in the opposite direction).
'nota'+'gem'='notagem'
'notagem' back-to-front is 'MEGATON'.
'that shows' acts as a link.
Can you help me to learn more?
(Other definitions for megaton that I've seen before include "Explosive power equivalent to one million tons of TNT" , "Powerful explosive unit" , "Measure of explosive power - montage (anag)" , "it weighs a lot" , "weight" .)