tachistoscope

[ tuh-kis-tuh-skohp ]

noun

, Psychology.

1. an apparatus for use in exposing visual stimuli, as pictures, letters, or words, for an extremely brief period, used chiefly to assess visual perception or to increase reading speed.

tachistoscope

/ təˈkɪstəˌskəʊp; təˌkɪstəˈskɒpɪk /

noun

1. an instrument, used mainly in experiments on perception and memory, for displaying visual images for very brief intervals, usually a fraction of a second

Derived Forms

• tachistoscopic, adjective
• taˌchistoˈscopically, adverb

Other Words From

• ta·chis·to·scop·ic [t, uh, -kis-t, uh, -, skop, -ik], adjective

Word History and Origins

Origin of tachistoscope¹

1905–10; < Greek táchist ( os ), superlative of tachýs swift + -o- + scope

Word History and Origins

Origin of tachistoscope¹

C20: from Greek takhistos swiftest (see tachy- ) + -scope