pho·no·car·di·o·graph 
(fō′nə-kärdē-ə-grăf′)
(fō′nə-kärdē-ə-grăf′)n.
An instrument consisting of microphones and recording equipment used to monitor and record heart sounds and murmurs.
pho′no·car′di·o·graphic adj.
pho′no·car′di·ogra·phy (-ŏgrə-fē) n.