411 REFERENCE · Wiktionary
Doppler sonar
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Noun
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en Doppler form of Q133220 A form of sonar that uses the Doppler effect to detect moving underwater objects; used especially by fishermen.
en doppler<id:Doppler form of Q133220><qq:ellipsis>
en sonar<id:Q133220> < imaging#Noun
en eponyms