le·​gion | \ ˈlē-jən How to pronounce legion (audio) \

Definition of legion

 (Entry 1 of 2)

1 : the principal unit of the Roman army comprising 3000 to 6000 foot soldiers with cavalry Caesar and his legions defeated the Gauls.
2 : a large military force especially : army sense 1a the French Foreign Legion
3 : a very large number : multitude won him … a legion of devoted followers— Irving Kolodin
4 : a national association of ex-servicemen the American Legion



Definition of legion (Entry 2 of 2)

: many, numerous the problems are legion

Synonyms & Antonyms for legion

Synonyms: Noun

Synonyms: Adjective

Antonyms: Adjective

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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: Noun In his media interviews, Nance has touted the legion’s volunteer efforts and described the volunteers as being there for the right reasons. al, 20 Apr. 2022 Meanwhile, over at the Sahara tent, Brockhampton’s legion of fans had a bittersweet celebration for what could be their last time seeing the group, as the hip-hop boy band of the future are hanging it up after their final Coachella set next week. Tomás Mier, Rolling Stone, 17 Apr. 2022 Faced with this gathering momentum, the nations’ legion of union-avoidance consultants will stay plenty busy. Lauren Debter, Forbes, 13 Apr. 2022 Finally, after traveling thousands of miles to help Ukraine fight the Russian military, the country’s foreign legion rejected him. Los Angeles Times, 31 Mar. 2022 Each day, a legion of dispatchers like Woodall man the radios at 911 communications centers across metro Atlanta and expose themselves to a constant barrage of interactions that can be both tragic and devastating. Matt Bruce, ajc, 18 Mar. 2022 Americans’ involvement in the war will probably stretch beyond Zelensky’s foreign legion, however. Anchorage Daily News, 14 Mar. 2022 Americans’ involvement in the war will probably stretch beyond Zelensky’s foreign legion, however. Washington Post, 10 Mar. 2022 Through it all, Williams' growing legion of fans have not only been supportive of his career, but also of his young family. Tricia Despres, PEOPLE.com, 14 Dec. 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'legion.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of legion


13th century, in the meaning defined at sense 1


1687, in the meaning defined above

History and Etymology for legion

Noun and Adjective

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

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Time Traveler for legion

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

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Statistics for legion

Last Updated

10 May 2022

Cite this Entry

“Legion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/legion. Accessed 16 May. 2022.

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More Definitions for legion


le·​gion | \ ˈlē-jən How to pronounce legion (audio) \

Kids Definition of legion

1 : a group of from 3000 to 6000 soldiers that made up the chief army unit in ancient Rome
3 : a very great number She has a legion of admirers.

More from Merriam-Webster on legion

Nglish: Translation of legion for Spanish Speakers

Britannica English: Translation of legion for Arabic Speakers

Britannica.com: Encyclopedia article about legion


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