Meaning of EXPONENT in English

ex ‧ po ‧ nent /ɪkˈspəʊnənt $ -ˈspoʊ-/ BrE AmE noun [countable]

[ Date: 1500-1600 ; Language: Latin ; Origin: present participle of exponere ; ⇨ ↑ expose ]

1 . an exponent of an idea, belief etc tries to explain it and persuade others that it is good or useful

exponent of

a leading exponent of desktop publishing

2 . an exponent of a particular skill, idea, or activity is someone who is good at it

exponent of

The most famous exponent of this approach to art was probably Charles Rennie Mackintosh.

3 . technical 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

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.