[ lee-juh-nair ]
/ ˌli dʒəˈnɛər /


(often initial capital letter) a member of the American Legion.
a member of any legion; legionary.

Origin of legionnaire

From French, dating back to 1810–20; see origin at legionary
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for legionnaire

British Dictionary definitions for legionnaire


/ (ˌliːdʒəˈnɛə) /


(often capital) a member of certain military forces or associations, such as the French Foreign Legion or the British Legion
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 legionnaire



1818, from French légionnaire, from légion (see legion). Legionnaires' Disease, caused by Legionella pneumophilia, was named after the lethal outbreak of July 1976 at the American Legion convention in Philadelphia's Bellevue Stratford Hotel. Hence Legionella as the name of the bacterium that causes it.

Online Etymology Dictionary, © 2010 Douglas Harper