[ek-oh-kahr-dee-uh-graf, -grahf] 
| an instrument employing reflected ultrasonic waves to examine the structures and functioning of the heart. |
[ek-oh-kahr-dee-uh-graf-ik] , ech⋅o⋅car⋅di⋅o⋅graph⋅i⋅cal, adjective [ek-oh-kahr-dee-og-ruh-fee] , noun | ech·o·car·di·o·graph (ěk'ō-kär'dē-ə-grāf') n. An instrument that in a painless and noninvasive manner employs the differential transmission and reflection of ultrasonic waves to image structural and functional abnormalities of the heart. ech'o·car'di·o·graph'ic adj., ech'o·car'di·og'ra·phy (-ŏg'rə-fē) n. |
oʊˈkɑr