IPA: /ˌɛkəʊˈkɑːrdɪəʊɡræm/
KK: /ˌɛkoʊˈkɑrdioʊˌɡræm/
A test that uses sound waves to create a picture of the heart's structure and function.
The doctor ordered an echocardiogram to check how well my heart is working.
Echocardiogram → It is formed from "echo" (from Greek "ēchō", meaning sound or reverberation), "cardio" (from Greek "kardia", meaning heart), and "gram" (from Greek "gramma", meaning something written or recorded). The word describes a written record of the sound waves reflected from the heart, used in medical imaging.
Imagine sound waves ('echo') bouncing off the heart ('cardio') and creating a record ('gram') — that's what an echocardiogram is.