1. 指数：indenture 合约;契约 | index number 指数 | indirect production 间接生产

2. 指数;索引编号：index mirror 动镜 | index number 指数;索引编号 | index number 指数索引编号

3. 指标：index fossil 指示化石 | index number 指标 | index of discrimination 辨别指数

4. 索引碼：Index Number 索引碼 | Multi-Dimensional Array 多維陣列 | Reference Data Type 參照型別

noun

1. a number or ratio (a value on a scale of measurement) derived from a series of observed facts
can reveal relative changes as a function of time

Synonym: indexindicantindicator