detector

Noun
Synonyms: sensorsensing elementdemodulator

WordNet 3.0

Noun (3)

  1. any device that receives a signal or stimulus (as heat or pressure or light or motion etc.) and responds to it in a distinctive mannerSynonyms: sensorsensing element
  2. rectifier that extracts modulation from a radio carrier waveSynonyms: demodulator
  3. electronic equipment that detects the presence of radio signals or radioactivity
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Webster's Dictionary (GCIDE)

Detector \De*tect"or\, n. [L., a revealer.] One who, or that which, detects; a detecter. --Shak. [1913 Webster]

A deathbed's detector of the heart. --Young. [1913 Webster]

2.Specifically: (a) An indicator showing the depth of the water in a boiler. (b) (Elec.) A galvanometer, usually portable, for indicating the direction of a current. (c) (Elec.) Any of various devices for detecting the presence of electric waves. [Webster 1913 Suppl.]

Bank-note detector, a publication containing a description of genuine and counterfeit bank notes, designed to enable persons to discriminate between them.

Detector lock. See under Lock. [1913 Webster]

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