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[lam-bert] /ˈlæm bərt/
noun, Optics.
the centimeter-gram-second unit of luminance or brightness, equivalent to 0.32 candles per square centimeter, and equal to the brightness of a perfectly diffusing surface emitting or reflecting one lumen per square centimeter.
Abbreviation: L.
Origin of lambert
1910-15; named after J. H. Lambert


[lam-bert; for 2 also German lahm-bert] /ˈlæm bərt; for 2 also German ˈlɑm bɛrt/
[kon-stuh nt] /ˈkɒn stənt/ (Show IPA),
1905–51, English composer and conductor.
Johann Heinrich
[yoh-hahn hahyn-rikh] /ˈyoʊ hɑn ˈhaɪn rɪx/ (Show IPA),
1728–77, German scientist and mathematician.
a male given name: from Germanic words meaning “land” and “bright.”. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for lambert
Contemporary Examples
Historical Examples
  • "It's about as bleak a place for a house as a man could pick," lambert agreed.

  • Balbus, lambert, and Hugh had entered the house only a few minutes before them.

    A Tangled Tale Lewis Carroll
  • Mr lambert comes into his dinner at half after one o'clock; it is near that now.

    Bristol Bells Emma Marshall
  • lambert was beginning to doubt even this paragraph of his general instructions.

  • lambert watched him as he pranced about, chopping his steps with feet jerked up straight like a string-halt horse.

British Dictionary definitions for lambert


the cgs unit of illumination, equal to 1 lumen per square centimetre L
Word Origin
named after J. H. Lambert (1728–77), German mathematician and physicist


Constant. 1905–51, English composer and conductor. His works include much ballet music and The Rio Grande (1929), a work for chorus, orchestra, and piano, using jazz idioms
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for lambert


masc. proper name, from French, from German Lambert, from Old High German Lambreht, from lant "land" + beraht "bright." Old English cognate was Landbeorht. The popularity of the name from 12c. is probably due to immigration from Flanders, where St. Lambert of Maestricht was highly venerated. Attested as a surname from mid-12c.

Online Etymology Dictionary, © 2010 Douglas Harper
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lambert in Science
A unit of luminance in the centimeter-gram-second system, equivalent to the luminance of a perfectly diffusing surface that emits or reflects one lumen per square centimeter. The lambert is named after the Swiss mathematician and physicist Johann Heinrich Lambert (1728-1777).
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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