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
Big Think, 31 Mar. 2026
The company’s strong stance on privacy and security has cultivated trust among legions of its fans who line up at Apple’s retail stores to buy its latest products.
—Los Angeles Times, 30 Mar. 2026
There’s no way to know, former top White House economist Tyler Goodspeed says in a new book that will likely confound the legion of professional forecasters who regularly predict impending doom.
—Matt Peterson, CNBC, 30 Mar. 2026
Other internet critics slammed his great-uncle’s creation as touristy, insisting diners could find tastier versions among the legion of copycats.
—Danielle Paquette, Washington Post, 28 Mar. 2026
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Noun
The Roman legions did not march with a sword in one hand and a flower in the other.
—Big Think, 31 Mar. 2026
The company’s strong stance on privacy and security has cultivated trust among legions of its fans who line up at Apple’s retail stores to buy its latest products.
—Los Angeles Times, 30 Mar. 2026
There’s no way to know, former top White House economist Tyler Goodspeed says in a new book that will likely confound the legion of professional forecasters who regularly predict impending doom.
—Matt Peterson, CNBC, 30 Mar. 2026
Other internet critics slammed his great-uncle’s creation as touristy, insisting diners could find tastier versions among the legion of copycats.
—Danielle Paquette, Washington Post, 28 Mar. 2026
See All Example Sentences for legion
Cite this Entry
“Legion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/legion. Accessed 2 Apr. 2026.
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