otoscopePronunciation: /ˈəʊtəskəʊp/Definition of otoscope noun an instrument designed for visual examination of the eardrum and the passage of the outer ear, typically having a light and a set of lenses. Also called auriscope.Derivatives otoscopicPronunciation: /-ˈskɒpɪk/ adjective otoscopicallyPronunciation: /-ˈskɒpɪk(ə)li/ adverb otoscope in other Oxford dictionaries Definition of otoscope in the US English dictionary