|Origin:||, present participle of exponere; EXPOSE|
an exponent of an idea, belief etc tries to explain it and persuade others that it is good or useful
an exponent of a particular skill, idea, or activity is someone who is good at it
The most famous exponent of this approach to art was probably Charles Rennie Mackintosh.
a sign written above and to the right of a number or letter to show how many times that quantity is to be multiplied by itself