sonobuoy Hear it!

sonobuoy definition

sono·buoy (sän′ō bo̵i′, -bo̵̅o̅′ē; sō′nō-)

noun

a buoy that amplifies sound signals picked up under water and transmits them by radio

Etymology: < L sonus, sound + buoy

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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