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F_________
Definitions
depth finder for determining depth of water or a submerged object by means of ultrasound waves
Word origin
From fathom (“nautical length measurement used for depth”) + -meter.
Used in a sentence
“A Fathometer is just a vertical echo-ranger; its pings would sound the same and could drive a submarine out of position just as effectively as horizontal echo-ranging and might even make a contact.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer0 curated clues
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