detector

noun de·tec·tor \ di-ˈtek-tər \

Definition of detector

:one that detects: such as
a :a device for detecting the presence of electromagnetic waves or of radioactivity
b :a rectifier of high-frequency current used especially for extracting the intelligence from a radio signal

Examples of detector in a Sentence

  1. using metal detectors to improve safety at airports

  2. a motion detector to thwart burglaries

Recent Examples of detector from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'detector.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of detector

1541

detector Synonyms

Synonyms
sensor
Related Words
eye; electric eye, photoelectric cell; alarm (also alarum), trigger

DETECTOR Defined for English Language Learners

detector

noun

Definition of detector for English Language Learners

  • : a device that can tell if a substance or object is present : a device that detects the presence of something


Medical Dictionary

detector

noun de·tec·tor \ di-ˈtek-tər \

medical Definition of detector

:one that detects; especially :a device for detecting the presence of electromagnetic waves or of radioactivity


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