“Legion” usually means a large organized group, and by extension, a very large number of people or things.

Core meanings (quick take)

  • Ancient Roman army unit : A legion was the main Roman military unit, typically about 3,000–6,000 infantry soldiers plus some cavalry.
  • Any large military force : The word can also just mean an army or big fighting force, especially in names like “Foreign Legion.”
  • A very large number : In everyday language, “legion” means “very many” or “countless,” like “She has legions of fans.”
  • Ex‑service organization : In some countries it’s used for veterans’ associations, such as the American Legion.

In the Bible / historical context

In biblical and early Christian writing, “legion” refers to that Roman army unit and is also used figuratively for a great multitude, often with a sense of order and discipline. For example, in passages like Matthew 26:53, “twelve legions of angels” means an immense number of angels.

Modern everyday usage

Today you’ll most often see “legion” used:

  • For huge fanbases or online communities (a “legion of fans”).
  • In brand or group names to suggest strength, numbers, or loyalty (e.g., a gaming “legion”).

Bottom line: if someone asks “what does legion mean,” they’re usually asking for “a very large number of people or things,” originally based on a big, organized Roman army unit.

Information gathered from public forums or data available on the internet and portrayed here.