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
Will Carless, USA Today, 20 Jan. 2026
Under the terms of the deal, Centric will design and sell the collection while Palm Tree Crew will market it to its legions of fans.
—Jean E. Palmieri, Footwear News, 20 Jan. 2026
The singer has also spent a considerable amount of time in Rome, Italy, and was even seen waiting with legions of Catholics when Pope Leo XIV was elected the new pontiff.
—Ethan Millman, HollywoodReporter, 15 Jan. 2026
Although the wings are a touch smaller in size, they are served with plenty of hospitality and have earned a legion of enthusiastic fans.
—Matt Moore, Southern Living, 13 Jan. 2026
See All Example Sentences for legion
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Noun
Today’s crunchy universe has its own lexicon, myriad complicated theories and counter-theories, and a legion of skeptics and soothsayers, many with scientific or pseudoscientific backgrounds.
—Will Carless, USA Today, 20 Jan. 2026
Under the terms of the deal, Centric will design and sell the collection while Palm Tree Crew will market it to its legions of fans.
—Jean E. Palmieri, Footwear News, 20 Jan. 2026
The singer has also spent a considerable amount of time in Rome, Italy, and was even seen waiting with legions of Catholics when Pope Leo XIV was elected the new pontiff.
—Ethan Millman, HollywoodReporter, 15 Jan. 2026
Although the wings are a touch smaller in size, they are served with plenty of hospitality and have earned a legion of enthusiastic fans.
—Matt Moore, Southern Living, 13 Jan. 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 28 Jan. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
