Crossword Genius

Power player (8)

Ross

I believe the answer is:

exponent

I'm a little stuck... Click here to teach me more about this clue!

This clue might be a double definition.

'power' is the first definition.
(I know that power can be written as exponent)

'player' is the second definition.
The answer and definition can be both people as well as being singular nouns.
Maybe you can see an association between them that I don't see?

Can you help me to learn more?

(Other definitions for exponent that I've seen before include "Interpreter - performer" , "skilful practitioner" , "Interpretive artist - open next (anag)" , "Symbol of power" , "Interpretive artist or performer" .)

I've seen this clue in The Times and The Sunday Times.
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