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The Collaborative International Dictionary
Bank-note detector

Detector \De*tect"or\, n. [L., a revealer.] One who, or that which, detects; a detecter. --Shak. A deathbed's detector of the heart. --Young. 2. Specifically:

  1. An indicator showing the depth of the water in a boiler.

  2. (Elec.) A galvanometer, usually portable, for indicating the direction of a current.

  3. (Elec.) Any of various devices for detecting the presence of electric waves.

    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.