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English Lexicon

Sensor

/ˈsɛn.sər/
nounCEFR B2 (Upper)Top #2100 frequency
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Comprehensive Definitions & Senses

2 senses
As noun
  1. 1

    A device that detects or measures a physical property and records, indicates, or otherwise responds to it.

    "The smoke sensor activated when it detected elevated levels of smoke in the air."
  2. 2

    An instrument that converts a physical phenomenon into a signal that can be measured or recorded.

    "The temperature sensor provides real-time data to the monitoring system."
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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

Derived from the Latin verb sensus (past participle of sentire meaning 'to feel'), entering English via modern scientific coinage in the late 19th to early 20th century. The term evolved from describing biological faculties of perception to designating sophisticated mechanical and electronic devices capable of detecting physical stimuli.

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