Ta*chis"to*scope (?), n. [Gr. &?;, superl. of &?; swift + -scope.] (Physiol.)

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.

 

© Webster 1913.

Log in or register to write something here or to contact authors.