Meaning of EXPONENT in English

EXPONENT

/ ɪkˈspəʊnənt; NAmE -ˈspoʊ-/ noun

1.

a person who supports an idea, theory, etc. and persuades others that it is good

SYN proponent :

She was a leading exponent of free trade during her political career

2.

a person who is able to perform a particular activity with skill :

the most famous exponent of the art of mime

3.

( mathematics ) a raised figure or symbol that shows how many times a quantity must be multiplied by itself, for example the figure 4 in a 4

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WORD ORIGIN

late 16th cent. (as an adjective in the sense expounding ): from Latin exponent- putting out, from the verb exponere expose, publish, explain, from ex- out + ponere put.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.