stroboscope Syllabification: (stro·bo·scope)Pronunciation: /ˈstrōbəˌskōp/Definition of stroboscope noun Physics an instrument for studying periodic motion or determining speeds of rotation by shining a momentary bright light at intervals so that a moving object appears stationary. a lamp made to flash intermittently, especially for this purpose. Derivatives stroboscopicPronunciation: /ˌstrōbəˈskäpik/ adjective stroboscopicallyPronunciation: /ˌstrōbəˈskäpik(ə)lē/ adverb Origin: mid 19th century: from Greek strobos 'whirling' + -scopestroboscope in other Oxford dictionaries Definition of stroboscope in the British & World English dictionary