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

luminous flux

noun

Definition of luminous flux

  1. :  radiant flux in the visible-wavelength range usually expressed in lumens instead of watts



1911

First Known Use of luminous flux

1911


Medical Dictionary

luminous flux

noun

Medical Definition of luminous flux

  1. :  radiant flux in the visible-wavelength range usually expressed in lumens instead of watts—called also light flux




Learn More about luminous flux


Seen and Heard

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

WORD OF THE DAY

tending to dismiss important matters

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alt-5746713d76276

Which of these is a synonym of nonplus?

disapprove perplex reduce soothe
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ