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ONAD→tachistoscope

tachistoscope

Flag: gbEnglishOxford New American Dictionary
tachistoscope /təˈkistəˌskōp, təˈkɪstəˌskoʊp /
▸ noun an instrument used for exposing objects to the eye for a very brief measured period of time.
– DERIVATIVES
tachistoscopic /-ˌkistəˈskäpik/ adjective,tachistoscopically /-ˈskäpik(ə)lē/ adverb
– ORIGIN late 19th century : from Greek takhistos ‘swiftest’ + -scope.