Overturning the popular edition (9)
I believe the answer is:
inversion
'overturning' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
'popular edition' is the wordplay.
'popular' becomes 'in' ('in' can mean trendy).
'edition' becomes 'version'.
'in'+'version'='INVERSION'
'the' is the link.
Can you help me to learn more?
(Other definitions for inversion that I've seen before include "turning around" , "The opposite of" , "upsetting change" .)