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sonobuoy

[ son-uh-boo-e, -boi ]

noun

, Navigation.
  1. a buoy that emits a radio signal on receiving an underwater signal from a vessel.

sonobuoy

/ ˈsəʊnəˌbɔɪ /

noun

  1. a buoy equipped to detect underwater noises and transmit them by radio

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Word History and Origins

Origin of sonobuoy1

First recorded in 1940–45; sono- + buoy

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Word History and Origins

Origin of sonobuoy1

from sonic + buoy

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