Detector meaning

dĭ-tĕktər
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One that detects, especially a mechanical, electrical, or chemical device that automatically identifies and records or registers a stimulus, such as an environmental change in pressure or temperature, an electric signal, or radiation from a radioactive material.
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A person or thing that detects.
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An apparatus or device for indicating the presence of something, as electric waves.
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A device capable of registering a specific substance or physical phenomenon.

Smoke detectors are mandatory in public buildings.

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Origin of detector

  • From detect +‎ -or (“agent noun forming suffix”).

    From Wiktionary