指数
See also: 指數
ChineseEdit
For pronunciation and definitions of 指数 – see 指數 (“index; exponent”). (This term, 指数, is the simplified form of 指數.) 
Notes:

JapaneseEdit
Kanji in this term  

指  数 
し Grade: 3 
すう Grade: 2 
on’yomi 
NounEdit
指数 (shinjitai kanji, kyūjitai kanji 指數, hiragana しすう, rōmaji shisū)
 (economics) index  a single number calculated from an array of prices or of quantities.
 (mathematics) exponent, power  a product of equal factors. Notation and usage: x^{n}, read as "x to the power of n" or "x to the nth power", denotes x × x × ... × x, in which x appears n times, where n is called the exponent; the definition is extended to noninteger and complex exponents.