viscometerPronunciation: /vɪsˈkɒmɪtə/Definition of viscometer noun an instrument for measuring the viscosity of liquids. Derivatives viscometricPronunciation: /vɪskəˈmɛtrɪk/ adjective viscometricallyPronunciation: /vɪskəˈmɛtrɪk(ə)li/ adverb viscometry noun Origin: late 19th century: from late Latin viscosus 'viscous' + -meterviscometer in other Oxford dictionaries Definition of viscometer in the US English dictionary