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
Synonyms
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
Isaac Avilucea, Axios, 17 Jan. 2025
But anyone who thinks the egregious, and obvious, failures of both local and state government, which are legion, can be solved simply by installing an opposite-party alternative should think twice about that.
—Matthew Specktor, The Hollywood Reporter, 17 Jan. 2025
But all its flaws are related in some way to its economic structure, which has produced legions of uninsured and underinsured people, as well as crushing medical debt for millions.
—Michael Hiltzik, Los Angeles Times, 8 Jan. 2025
No efforts were made to breach the metal fencing and legions of police stationed around the building.
—Riley Beggin, USA TODAY, 6 Jan. 2025
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
His friends credit his infectious personality with recruiting a legion of new followers.
—Isaac Avilucea, Axios, 17 Jan. 2025
But anyone who thinks the egregious, and obvious, failures of both local and state government, which are legion, can be solved simply by installing an opposite-party alternative should think twice about that.
—Matthew Specktor, The Hollywood Reporter, 17 Jan. 2025
But all its flaws are related in some way to its economic structure, which has produced legions of uninsured and underinsured people, as well as crushing medical debt for millions.
—Michael Hiltzik, Los Angeles Times, 8 Jan. 2025
No efforts were made to breach the metal fencing and legions of police stationed around the building.
—Riley Beggin, USA TODAY, 6 Jan. 2025
See all Example Sentences for legion
Dictionary Entries Near legion
Cite this Entry
“Legion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/legion. Accessed 30 Jan. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share