Dictionary.com
definitions

echograph

[ek-oh-graf, -grahf]
noun
  1. a device that records oceanic depths by means of sonic waves.
  2. a similar device used in ultrasonography to examine internal body structures or monitor fetal development.

Origin of echograph

First recorded in 1945–50; echo + -graph
Related formsech·o·graph·ic [ek-oh-graf-ik] /ˌɛk oʊˈgræf ɪk/, adjectiveech·o·graph·i·cal·ly, adverbe·chog·ra·phy [e-kog-ruh-fee] /ɛˈkɒg rə fi/, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018