Definition of legion in English:

Share this entry


Pronunciation: /ˈlējən/


1A unit of 3,000-6,000 men in the ancient Roman army.
Example sentences
  • The most important fighting unit of the Roman Army was the legion commanded by a legatus.
  • Thus it was Titus who commanded the Roman legions during the famous sack of Jerusalem.
  • The Roman legions brought peace and prosperity, at least most of the time.
brigade, regiment, battalion, company, troop, division, squadron, squad, platoon, phalanx, unit, force
1.1 (the Legion) The Foreign Legion.
1.2 (the Legion) Any of the national associations of former servicemen and servicewomen instituted after World War I, such as the American Legion.
2 (a legion/legions of) A vast host, multitude, or number of people or things: legions of photographers and TV cameras
More example sentences
  • She has already won a legion of admirers and a Radio 3 Award for world music.
  • It'll silence their critics, amaze their fans and win them a whole new legion of admirers.
  • For the band's legion of fans, Metz's book is a loving walk down memory lane.
horde, throng, multitude, host, crowd, mass, mob, gang, swarm, flock, herd, score, army, pack


Great in number: her fans are legion
More example sentences
  • His list of friends and admirers there is legion.
  • Admirers, who are legion according to Chan, call him Little Prince ‘because he's very pretty.’
  • By contrast, makeshift labs that produce the synthetic drug methamphetamine are legion - thousands of such facilities are busted annually.
numerous, countless, innumerable, incalculable, many, abundant, plentiful
literary myriad


Middle English: via Old French from Latin legion-, from legere 'choose, levy'. The adjective dates from the late 17th century, in early use often in the phrase my, their, etc., name is legion, i.e., 'we, they, etc., are many' (Mark 5:9).

Words that rhyme with legion

Glaswegian, Norwegian, region

For editors and proofreaders

Syllabification: le·gion

Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.