rockoon Hear it!

rockoon definition

☆ rock·oon (rä ko̵̅o̅n′, räk′o̵̅o̅n)

noun

a high-altitude sounding system in which a rocket is launched upward from a balloon that has reached its maximum altitude

Etymology: rock(et) + (ball)oon

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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