detector
nounmasculine/dɨtɛtɔɾ/medium
de·te·tor
Definition
A device that detects, registers, or indicates the presence of something, such as radiation, motion, or substances.
The smoke detector went off when the fire started.
Police used a metal detector in the search.
Common collocations
metal detectorsmoke detectormotion detectorgas detector
Etymology
Do latim 'detector', de 'detegere' (descobrir, revelar).