detector
/dɪˈtɛktə
/noun [often with modifier]
A device or instrument designed to detect the presence of a particular object or substance: methane detectors...
- The carbon monoxide detector is designed to sense the presence of carbon monoxide in the air.
- But it took another six years for a TV detector van to take to the streets.
- They use detection equipment, including detector vans and hand-held scanners.
