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chili-

A thousand.

Greek khilioi, thousand.

This is the less common equivalent of kilo‑, from the same Greek root. A chiliad is a group of a thousand things; a chiliast is more commonly called a millenarian, a person who believes that Christ will return to reign on earth for 1000 years; chiliarch is an historical term, especially in ancient Greece, for a commander of a thousand men; a chiliagon is a plane figure with a thousand faces.

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