exponent
n
1 person or thing that explains and supports a theory, belief, cause, etc (理論、 信仰、 事業等的)倡導者, 擁護者
an exponent of free trade 自由貿易的擁護者
Huxley was an exponent of Darwin's theory of evolution. 赫胥黎是達爾文進化論的鼓吹者.
2 person able to perform skilfully a particular activity (某種活動的)能手
the most famous exponent of mime 最著名的啞劇表演大師
She's a practised exponent of the sport of water-skiing. 她是滑水運動健將.
3 (mathematics 數) figure or symbol that shows how many times a quantity must be multiplied by itself 指數; 冪
In a3, the figure 3 is the exponent. a3中的3是指數.
In xn, the symbol n is the exponent. xn中的n是指數.