fathogram

[ fath-uh-gram ]
/ ˈfæð əˌgræm /

noun

the record made by a sonic depth finder.

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disgruntle

Origin of fathogram

First recorded in 1945–50; fatho(meter) + -gram1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020