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pho·no·car·dio·gram .fō-nə-'kärd-ē-ə-.gram n a graphic record of heart sounds made by means of a phonocardiograph
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n.
• phonocardiography n.
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pho·no·car·di·o·gram (fo″no-kahrґde-o-gram) [phono- + cardiogram] the graphic record produced by phonocardiography.
Phonocardiogram recorded at the apex in a young adult with rheumatic mitral stenosis. In diastole, there is an opening snap (OS) and a diastolic murmur (DM) that has presystolic accentuation. (S1), First heart sound; (S2), second heart sound.
Medical dictionary. 2011.