oscillographPronunciation: /əˈsɪləgrɑːf/Definition of oscillograph noun a device for recording oscillations, especially those of an electric current. Derivatives oscillographicPronunciation: /-ˈgrafɪk/ adjective oscillographyPronunciation: /-ˈlɒgrəfi/ noun oscillograph in other Oxford dictionaries Definition of oscillograph in the US English dictionary