transmittance

noun trans·mit·tance \ tran(t)s-ˈmi-tᵊn(t)s , tranz- \

Definition of transmittance

2 : the fraction of radiant energy that having entered a layer of absorbing matter reaches its farther boundary

First Known Use of transmittance

circa 1855

in the meaning defined at sense 1

See Words from the same year
NEW! Time Traveler

Medical Dictionary

transmittance

noun trans·mit·tance \ -ˈmit-ᵊn(t)s \

medical Definition of transmittance

2 : the fraction of radiant energy that having entered a layer of absorbing matter reaches its farther boundary

Seen and Heard

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

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

excessive admiration or flattery

Get Word of the Day daily email!

Test Your Vocabulary

Difficult Spelling Words Quiz

  • alphabet-pasta-spelling-help
  • Which is the correct spelling?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Word Winder's CrossWinder

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

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!