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

emissivity

play
noun emis·siv·i·ty \ˌe-mə-ˈsi-və-tē, ˌē-ˌmi-ˈsiv-\

Definition of emissivity

plural emis·siv·i·ties

  1. :  the relative power of a surface to emit heat by radiation :  the ratio of the radiant energy emitted by a surface to that emitted by a blackbody at the same temperature




Medical Dictionary

emissivity

play play
noun emis·siv·i·ty \ˌem-ə-ˈsiv-ət-ē, ˌē-ˌmis-ˈiv-\

Medical Definition of emissivity

plural emis·siv·i·ties

  1. :  the relative power of a surface to emit heat by radiation :  the ratio of the radiant energy emitted by a surface to that emitted by a blackbody at the same temperature




Learn More about emissivity

  1. Medical Dictionary: Definition of "emissivity"


Seen and Heard

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

WORD OF THE DAY

February 11, 2016

the holder of an office

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?

196.5 pounds 2.2 pounds 100 pounds 16.96 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