lumen-hour

lumen-hour

[loo-muhn-ouuhr, -ou-er]
noun Optics.
a unit of luminous energy, equal to that emitted in 1 hour by a light source emitting a luminous flux of 1 lumen. Abbreviation: lm-hr

Origin:
1920–25

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To lumen-hour
Explore Dictionary.com
Previous Definition: lumen hour
Next Definition: lumenal
Words Near: lumen-hour
More from Thesaurus.com
Synonyms and Antonyms for lumen-hour
More from Reference.com
Search for articles containing lumen-hour
More from Dictionary.com Translator
Dictionary.com Word FAQs

Dictionary.com presents 366 FAQs, incorporating some of the frequently asked questions from the past with newer queries.

Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature