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noun, plural le·ges [lee-jeez; Latin le-ges] /ˈli dʒiz; Latin ˈlɛ gɛs/.
  1. law1.
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Origin of lex

First recorded in 1490–1500, lex is from the Latin word lēx


salus populi suprema lex esto

[sah-loo s paw-poo-lee soo-prey-mah leks es-toh; English sey-luh s pop-yuh-lahy-soo-pree-muh leks es-toh]
  1. let the welfare of the people be the supreme law: a motto of Missouri.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for lex


noun plural leges (ˈliːdʒiːz)
  1. a system or body of laws
  2. a particular specified law
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Word Origin

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