Indicator

/ˈɪndɪkˌe‍ɪtɐ/

/ˈɪndəˌkeɪtɝ/

Indicator

a light on a vehicle that blinks to indicate a change in lane

something that is used to measure a particular condition or value

synonyms : index

a device for showing the operating condition of some system

a substance used for determining the condition of a solution by changing into different colors

Examples

1. Lichen serves as an indicator of air quality due to its sensitivity to pollution.

2. The rise of extremist groups in recent years is a clear indicator of the fact that history repeats itself when we don't learn from our mistakes.

3. It has indicators.

4. The indicator then plots this value as a line on the stock chart.