so·​no·​buoy | \ˈsä-nə-ˌbȯi, -ˌbü-ē\

Definition of sonobuoy 

: a buoy equipped for detecting underwater sounds and transmitting them by radio

Examples of sonobuoy in a Sentence

Recent Examples on the Web

In addition the Trackers were armed with sonobuoys, droppable listening posts that radio any contacts back to the plane., "May 13, 1958: Aboard the Nautilus," 13 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sonobuoy.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of sonobuoy

1937, in the meaning defined above

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The first known use of sonobuoy was in 1937

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the figure or shape of a crescent moon

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