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
3
: a very large number : multitude
won him … a legion of devoted followers—
Irving Kolodin
Irving Kolodin4
: a national association of ex-servicemen
the American 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
Ilan Berman, MSNBC Newsweek, 10 Oct. 2025
Zach Bryan has become one of the biggest stars in country music over the past few years, winning legions of fans with a unique blend of Americana, self-reflection, and heartfelt love songs, while staying far away from politics.
—Rebecca Schneid, Time, 6 Oct. 2025
Stories are legion of riders battling various ailments to stay in the competition, often against their own better judgment.
—Erik Shilling, Robb Report, 6 Oct. 2025
Best Nightlife Jasper Royal Canadian Legion Many small Canadian towns have legions—places where locals gather for a drink (and sometimes a party), and Jasper is no exception.
—Lisa Kadane, Travel + Leisure, 6 Oct. 2025
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Noun
To be sure, the practical hurdles to a comprehensive peace deal are legion.
—Ilan Berman, MSNBC Newsweek, 10 Oct. 2025
Zach Bryan has become one of the biggest stars in country music over the past few years, winning legions of fans with a unique blend of Americana, self-reflection, and heartfelt love songs, while staying far away from politics.
—Rebecca Schneid, Time, 6 Oct. 2025
Stories are legion of riders battling various ailments to stay in the competition, often against their own better judgment.
—Erik Shilling, Robb Report, 6 Oct. 2025
Best Nightlife Jasper Royal Canadian Legion Many small Canadian towns have legions—places where locals gather for a drink (and sometimes a party), and Jasper is no exception.
—Lisa Kadane, Travel + Leisure, 6 Oct. 2025
See All Example Sentences for legion
Cite this Entry
“Legion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/legion. Accessed 21 Oct. 2025.
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