Performer, executant (8)
I believe the answer is:
exponent
(Other definitions for exponent that I've seen before include "index" , "Skilled performer" , "Propagandist" , "Symbol of power" , "Promoter (of an idea or theory)" .)
I believe the answer is:
exponent
(Other definitions for exponent that I've seen before include "index" , "Skilled performer" , "Propagandist" , "Symbol of power" , "Promoter (of an idea or theory)" .)