English Reference

Word

lambert

Phoneticslam·bert

US/ˈɫæmbɝt/

UK/lˈæmbət/

Definitions

01unit of brightness

C2 · Science

n. a scientific unit used to measure how much light comes off a surface.

n. a non-SI unit of luminance, defined as the brightness of a surface emitting one lumen per square centimetre.

“The scientist recorded the brightness of the screen in lamberts.”

“Although the candela per square metre is the standard SI unit, the lambert is still occasionally encountered in older texts discussing surface luminance.”

Technical

Usage

Usually abbreviated as 'L' or 'Lb' in technical documentation.

Synonyms

luminance unit

02a name

B2

n. a traditional male first name or a family name.

n. a male given name of Germanic origin, or a common surname derived from the same root.

“Mr. Lambert has been teaching history at this school for twenty years.”

“The historical documents were signed by a man named Lambert, though his exact role in the administration remains unclear.”

Etymology

From Middle English Lambert, from Old French Lambert, a saint's name (of a Bishop of Maastricht) brought to England by the Normans, from Proto-West Germanic Landaberht, from land (“land”) + *berht (“bright”). Cognate with Old English Landbeorht, Old High German Lantberht, Dutch Lambrecht.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Domains

AstronomyPhysics

This entry

Level
C2 · Proficiency
Frequency
Frequent
Updated

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