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autokinetic effect

American  

noun

Psychology.

  1. apparent motion of a single point of light or a small object when presented on a dark field and observed continuously.

Etymology

Origin of autokinetic effect

First recorded in 1930–35

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.