ex·po·nent 
/ɪkˈspoʊnənt, ˈɛkˌspoʊnənt/ noun
plural ex·po·nents /ɪkˈspoʊnənt, ˈɛkˌspoʊnənt/ noun [count] 1 a : someone who supports a particular cause, belief, etc.
▪ He was a leading exponent [=supporter, proponent] of the civil rights movement.
b : someone who is known for a particular method, style, etc.
▪ She has become one of America's foremost exponents of the romantic style in interior design. 2 mathematics : a symbol that is written above and to the right of a number to show how many times the number is to be multiplied by itself
▪ The exponent 3 in 103 indicates 10 x 10 x 10.
▪ He was a leading exponent [=supporter, proponent] of the civil rights movement.
b : someone who is known for a particular method, style, etc.
▪ She has become one of America's foremost exponents of the romantic style in interior design.
▪ The exponent 3 in 103 indicates 10 x 10 x 10.
