detector

(noun)

noun

1. any device that receives a signal or stimulus (as heat or pressure or light or motion etc.) and responds to it in a distinctive manner

Similar word(s): sensor

Definition categories: man–made, device

2. rectifier that extracts modulation from a radio carrier wave

Similar word(s): demodulator

Definition categories: man–made, rectifier

3. electronic equipment that detects the presence of radio signals or radioactivity

Definition categories: man–made

Sentences with detector as a noun:

- Smoke detectors are mandatory in public buildings.