lambert

[lam-bert]
noun Optics.
  1. 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

First recorded in 1910–15; named after J. H. Lambert

Lambert

[lam-bert; for 2 also German lahm-bert]
noun
  1. Con·stant [kon-stuh nt] /ˈkɒn stənt/, 1905–51, English composer and conductor.
  2. Jo·hann Hein·rich [yoh-hahn hahyn-rikh] /ˈyoʊ hɑn ˈhaɪn rɪx/, 1728–77, German scientist and mathematician.
  3. a male given name: from Germanic words meaning “land” and “bright.”
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for lambert

Contemporary Examples of lambert

Historical Examples of lambert

  • "And old Lambert," said one of the other girls, delightedly.

    Malbone

    Thomas Wentworth Higginson

  • The fisherman had indeed seen Lambert's boat, which was well known.

    Malbone

    Thomas Wentworth Higginson

  • He says a friend of his, the Governor of——what was that name again, Lambert?

    A Tangled Tale

    Lewis Carroll

  • He took out the little bucket as he spoke, and handed the big one to Lambert.

    A Tangled Tale

    Lewis Carroll

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

    A Tangled Tale

    Lewis Carroll


British Dictionary definitions for lambert

lambert

noun
  1. the cgs unit of illumination, equal to 1 lumen per square centimetreSymbol: L

Word Origin for lambert

named after J. H. Lambert (1728–77), German mathematician and physicist

Lambert

noun
  1. 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

Word Origin and History for lambert

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

lambert in Science

lambert

[lămbərt]
  1. 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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.