[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.

Nearby words

  1. sensitized cell,
  2. sensitizing dye,
  3. sensitometer,
  4. sensitometric curve,
  5. sensitometry,
  6. sensor network,
  7. sensori-,
  8. sensorial,
  9. sensorimotor,
  10. sensorimotor area

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

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

Medicine definitions for sensor


[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.