Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

sensor

play
noun sen·sor \ˈsen-ˌsȯr, ˈsen(t)-sər\

Simple Definition of sensor

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

Full Definition of sensor

  1. 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)

  2. 2 :  sense organ

Examples of sensor

  1. Image sensors are used in digital cameras.

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



Origin of sensor

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


First Known Use: circa 1928

Rhymes with sensor


Medical Dictionary

sensor

play play
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





Seen and Heard

What made you want to look up sensor? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

February 12, 2016

of, relating to, or suggestive of marble

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image33683556

How much does a batman (the Turkish unit of measurement) weigh?

2.2 pounds 196.5 pounds 16.96 pounds 100 pounds
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ