Etymology

lambert

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Today it means: a cgs unit of luminance; the brightness of a surface that emits one lumen per square centimetre Full definition →

Middle English Lambert ← Old French Lambert ← Proto-West Germanic *Landaberht
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lambert · noun1

From Lambert; Named for Johann Heinrich Lambert (1728–1777), a Swiss mathematician, physicist and astronomer.

Lambert · proper noun2

  1. Proto-West Germanic · derived from*Landaberht
  2. Old French · derived fromLambert
  3. Middle English · inherited fromLambert
  4. English todayLambert

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 Lantbërht, Dutch Lambrecht.

Etymology from Wiktionary, CC BY-SA 4.0.