sensor

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noun sen·sor \ˈsen-ˌsȯr, ˈsen(t)-sər\

Definition of sensor

  1. 1 :  a device that responds to a physical stimulus (such as heat, light, sound, pressure, magnetism, or a particular motion) and transmits a resulting impulse (as for measurement or operating a control)

  2. 2 :  sense organ

Examples of sensor in a Sentence

  1. Image sensors are used in digital cameras.

  2. Infrared sensors can track an object's movement.

Recent Examples of sensor from the Web

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

Did You Know?

Sensors are used today almost everywhere. Radar guns bounce microwaves off moving cars. A burglar alarm may use a photosensor to detect when a beam of light has been broken, or may use ultrasonic sound waves that bounce off moving objects. Still other sensors may detect pressure (barometers) or chemicals (Breathalyzers and smoke detectors). Stud finders, used by carpenters to locate wooden studs under a wall, may employ magnets or radar. Wired gloves, which relay information about the position of the fingers, are used in virtual-reality environments. A cheap car alarm may be nothing but a shock sensor, in which a strong vibration will cause two metal surfaces to come together.

Origin and Etymology of sensor

Latin sentire to perceive + English 1-or — more at sense


SENSOR Defined for English Language Learners

sensor

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noun

Definition of sensor for English Language Learners

  • : a device that detects or senses heat, light, sound, motion, etc., and then reacts to it in a particular way


Medical Dictionary

sensor

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noun sen·sor \ˈsen-ˌsȯ(ə)r, ˈsen(t)-sər\

Medical Definition of sensor

  1. :  a device that responds to a physical stimulus (as heat, light, sound, pressure, magnetism, or a particular motion) and transmits a resulting impulse (as for measurement or operating a control); also :  sense organ



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