Kuiper belt Hear it!

Kuiper belt definition

Kui·per belt (kī′pər)

a belt of icy debris orbiting in the outer solar system, thought to be the source of many comets

Etymology: after G. P. Kuiper (1905-73), U.S. astronomer

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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