sensor.
A device or organ that detects certain external stimuli and responds in a distinctive manner.
Meaning & usage
A device or organ that detects certain external stimuli and responds in a distinctive manner.
The smoke sensor triggered the alarm.
Modern phones contain a light sensor that adjusts brightness.
Where this word comes from
Originated 1925–30, formed as a Latin loanword from sentiō (“to feel”) + -tor (“-er”). By surface analysis, sense + -or.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.