kymograph Syllabification: (ky·mo·graph)Pronunciation: /ˈkīməˌgraf/Definition of kymograph noun an instrument for recording variations in pressure, e.g., in sound waves or in blood within blood vessels, by the trace of a stylus on a rotating cylinder. Derivatives kymographicPronunciation: /ˌkīməˈgrafik/ adjective Origin: mid 19th century: from Greek kuma 'wave' + -graphkymograph in other Oxford dictionaries Definition of kymograph in the British & World English dictionary