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le·​gion ˈlē-jən How to pronounce legion (audio)
: the principal unit of the Roman army comprising 3000 to 6000 foot soldiers with cavalry
Caesar and his legions defeated the Gauls.
: a large military force
especially : army sense 1a
the French Foreign Legion
: a very large number : multitude
won him … a legion of devoted followersIrving Kolodin
: a national association of ex-servicemen
the American Legion


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: many, numerous
the problems are legion

Examples of legion in a Sentence

Noun Legions of people came to see him perform. joined the French Foreign Legion Adjective the obstacles that the programmers had to overcome have been legion
Recent Examples on the Web
She is revered by legions of devoted fans, who inundate her with mail and mob her at events, testifying about having found her videos in moments of despair. Ayelet Waldman, The New Yorker, 30 Mar. 2024 Coordinating with Kyiv’s Defense Intelligence Directorate, several volunteer legions of Russians fighting for Ukraine have stepped up their own assaults on Russia’s border villages in recent weeks. Andy Carey, CNN, 27 Mar. 2024 He has been greeted by legions of adoring fans at the Dodger's season-opening series in Seoul, despite South Korea's long-standing rivalry with Ohtani's native Japan. Patrick Smith, NBC News, 21 Mar. 2024 Without new legislation, crucial services and legions of federal workers will be sidelined or go unpaid as soon as 12:01 a.m. Saturday. Jacob Bogage, Washington Post, 19 Mar. 2024 But inside, legions of workers hired by the Austrian tech giant AT&S are already gearing up to produce at full capacity by year’s end. Patricia Cohen, New York Times, 13 Mar. 2024 The results, as Librae’s legion of fans will attest, aren’t just picture-perfect algorithm fodder. The Bon Appétit Staff & Contributors, Bon Appétit, 13 Mar. 2024 The findings will do little to dissuade the legions of Americans who believe the government is hiding an extensive history of alien visitation. Dave Smith, Fortune, 8 Mar. 2024 And maybe that is part of this story: a legion of young men who know their chances of rising high are small, and so see in the ring a path. Toby Muse, Rolling Stone, 3 Mar. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'legion.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


Noun and Adjective

Middle English, from Anglo-French, from Latin legion-, legio, from legere to gather — more at legend

First Known Use


13th century, in the meaning defined at sense 1


1687, in the meaning defined above

Time Traveler
The first known use of legion was in the 13th century

Dictionary Entries Near legion

Cite this Entry

“Legion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/legion. Accessed 13 Apr. 2024.

Kids Definition


: the chief unit of the Roman army consisting of 3000 to 6000 foot soldiers with cavalry
: a very large number : multitude

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