指数 zhǐshù index
(numerical, statistical) index; (maths) exponent; index; exponential (function, growth)
How to remember 指数: 指 point at + 数 number = index.
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How it is used
- An index (statistical) or an exponent (math) - 股票指数 (gǔpiào zhǐshù) stock index, 消费价格指数 CPI; 指数增长 exponential growth.
- Two distinct fields under one word: an economic/statistical measure, and the mathematical power.