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

Medical Dictionary

1

infrared

play
adjective in·fra·red \ˌin-frə-ˈred\

Medical Definition of infrared

  1. 1:  lying outside the visible spectrum at its red end—used of radiation having a wavelength between about 700 nanometers and 1 millimeter

  2. 2:  relating to, producing, or employing infrared radiation <infrared therapy>




2

infrared

noun in·fra·red

Medical Definition of infrared

  1. :  infrared radiation




Learn More about infrared


Seen and Heard

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

WORD OF THE DAY

February 14, 2016

to hug and kiss another person

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 16.96 pounds 196.5 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