sonobuoy.
A buoy that sends a radio signal when it detects the sound of underwater objects (such as submarines).
Meaning & usage
A buoy that sends a radio signal when it detects the sound of underwater objects (such as submarines).
Where this word comes from
Etymology tree Proto-Indo-European *swenh₂- Proto-Indo-European *swónh₂os Latin sonus English sono- English buoy English sonobuoy From sono- + buoy.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.