n. a device that displays a series of brief images; used by psychologists to investigate perception, memory and learning
the GNU version of the Collaborative International Dictionary of English
n. An apparatus for exposing briefly to view a screen bearing letters or figures. It is used in studying the range of attention, or the power of distinguishing separate objects in a single impression.
The Century Dictionary and Cyclopedia
n. In experimental psychology, an apparatus which exposes to view, for a brief and accurately variable time, an object or small group of objects (letters, short words, etc.).
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. scientific instrument used by psychologists; presents visual stimuli for brief exposures
Word Usage
"Scientists developed an instrument called the tachistoscope to study the effects of flicker."