Revolutionary English, say? I’m surprised that’s heard in Ohio (3)
I believe the answer is:
gee
'i'm surprised that's heard in ohio' is the definition.
(US expression of shock)
'revolutionary english say?' is the wordplay.
'revolutionary' shows that the letters should be reversed in order.
'english' becomes 'e' (abbreviation).
'say?' becomes 'eg'.
'e'+'eg'='eeg'
'eeg' in reverse letter order is 'GEE'.
(Other definitions for gee that I've seen before include "move faster" , "Gosh" , "crumbs" , "American exclamation" , "Well I never" .)