[sen-sawr, -ser]


a mechanical device sensitive to light, temperature, radiation level, or the like, that transmits a signal to a measuring or control instrument.

Origin of sensor

First recorded in 1925–30; sense + -or2
Can be confusedcenser censor censure sensor Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for sensor

Contemporary Examples of sensor

Historical Examples of sensor

  • Id have rote you sooner only the sensor wont let me tell where I am an I couldnt think of nothin else to say.

  • The 2d we lodged at a sensor called Assambine, eleven miles, where were only a few poor cottages.

  • When you shot down that sensor, the starship did not retaliate, but went on without taking any notice of you.

    The Galaxy Primes

    Edward Elmer Smith

  • Then the CAD people added an algorithm that would take the sensor data and generate random variations on the same basis.


    Cory Doctorow

  • Sensor technologies are grouped into four areas: active, passive, imbedded, and processing.

    Shock and Awe

    Harlan K. Ullman

British Dictionary definitions for sensor



anything, such as a photoelectric cell, that receives a signal or stimulus and responds to it

Word Origin for sensor

C19: from Latin sēnsus perceived, from sentīre to observe
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for sensor

1947, from an adjective (1865), a shortened form of sensory (q.v.).

Online Etymology Dictionary, © 2010 Douglas Harper

sensor in Medicine


[sĕnsər, -sôr′]


A device, such as a photoelectric cell, that receives and responds to a signal or stimulus.
sense organ
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.