tachistoscope

[tuh-kis-tuh-skohp]

ta·chis·to·scope

[tuh-kis-tuh-skohp]
noun Psychology.
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.

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

ta·chis·to·scop·ic [tuh-kis-tuh-skop-ik] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Tachistoscope is always a great word to know.
So is gobo. Does it mean:
a chattering or flighty, light-headed person.
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
Collins
World English Dictionary
tachistoscope (təˈkɪstəˌskəʊp)
 
n
an instrument, used mainly in experiments on perception and memory, for displaying visual images for very brief intervals, usually a fraction of a second
 
[C20: from Greek takhistos swiftest (see tachy-) + -scope]
 
tachistoscopic
 
adj
 
tachisto'scopically
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Medical Dictionary

tachistoscope ta·chis·to·scope (tā-kĭs'tə-skōp', tə-)
n.
An apparatus that projects a series of images onto a screen at rapid speed to test visual perception, memory, and learning.


ta·chis'to·scop'ic (-skŏp'ĭk) adj.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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