# indicator
## Noun (N)
### Sense: 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
- ค่าดัชนี
- ดัชนี
- ดัชนีชี้วัด
- เลขดัชนี
### Sense: a signal for attracting attention
- ต้วบอก
- อินดิเคเตอร์
### Sense: a device for showing the operating condition of some system
### Sense: (chemistry) a substance that changes color to indicate the presence of some ion or substance; can be used to indicate the completion of a chemical reaction or (in medicine) to test for a particular reaction