01 n. One who, or that which, detects; a detecter.
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1.
One who, or that which, detects; a detecter.“A deathbed's detector of the heart.” — Young.
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2.
An indicator showing the depth of the water in a boiler.(Elec.)
Phrases & compounds
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.