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
Victoria Edel, PEOPLE, 25 Dec. 2025
That success has been amplified by Kelce's relationship with pop superstar Taylor Swift, whose legions of fans have adopted the Chiefs as their favorite team.
—David K. Li, NBC news, 22 Dec. 2025
The scent profile, the sleek tube packaging, and the rich texture all work together for a luxurious experience—and legions of TikTok users would agree.
—Kiana Murden, Vogue, 18 Dec. 2025
FanDuel wanted to get involved, legions of fans were swarming bars to find out who was leaving the villa.
—Peter White, Deadline, 18 Dec. 2025
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Noun
Seasonal viewers on cable — and now on streaming — have helped introduce the movie to new legions of fans over the past two decades.
—Victoria Edel, PEOPLE, 25 Dec. 2025
That success has been amplified by Kelce's relationship with pop superstar Taylor Swift, whose legions of fans have adopted the Chiefs as their favorite team.
—David K. Li, NBC news, 22 Dec. 2025
The scent profile, the sleek tube packaging, and the rich texture all work together for a luxurious experience—and legions of TikTok users would agree.
—Kiana Murden, Vogue, 18 Dec. 2025
FanDuel wanted to get involved, legions of fans were swarming bars to find out who was leaving the villa.
—Peter White, Deadline, 18 Dec. 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 31 Dec. 2025.
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