lambert

[ 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

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

Definition for lambert (2 of 2)

Lambert

[ lam-bert; for 2 also German lahm-bert ]
/ ˈlæm bərt; for 2 also German ˈlɑm bɛrt /

noun

Con·stant [kon-stuh nt] /ˈkɒn stənt/, 1905–51, English composer and conductor.
Jo·hann Hein·rich [yoh-hahn hahyn-rikh] /ˈyoʊ hɑn ˈhaɪn rɪx/, 1728–77, German scientist and mathematician.
a male given name: from Germanic words meaning “land” and “bright.”
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for lambert

British Dictionary definitions for lambert (1 of 2)

lambert

/ (ˈlæmbət) /

noun

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

British Dictionary definitions for lambert (2 of 2)

Lambert

/ (ˈlæmbət) /

noun

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

Science definitions for lambert

lambert

[ lămbərt ]

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.