phi phenomenon

noun

Definition of phi phenomenon

: apparent motion resulting from an orderly sequence of stimuli (such as lights flashed in rapid succession a short distance apart on a sign) without any actual motion being presented to the eye

First Known Use of phi phenomenon

circa 1928


Medical Dictionary

phi phenomenon

noun \ ˈfī- \

medical Definition of phi phenomenon

: apparent motion resulting from an orderly sequence of stimuli (as lights flashed in rapid succession a short distance apart on a sign) without any actual motion being presented to the eye — compare apparent motion

Learn More about phi phenomenon


Seen and Heard

What made you want to look up phi phenomenon? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

sticky or viscid

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Citation

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!