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sonic depth finder

a sonar instrument that uses echolocation to measure depths under water.
Also called echo sounder.
Compare Fathometer.
Origin of sonic depth finder
1925-30 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for sonic depth finder
  • Also called a sonic depth finder economic: adjective: having to do with money.
  • Also called a sonic depth finder plain: noun: flat, smooth area at a low elevation.
British Dictionary definitions for sonic depth finder

sonic depth finder

an instrument for detecting the depth of water or of a submerged object by means of sound waves; Fathometer See also sonar
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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