thaumatrope: Meaning and Definition of

thau•ma•trope

Pronunciation: (thô'mu-trōp"), [key]
— n.
  1. a card with different pictures on opposite sides, as a horse on one side and a rider on the other, which appear as if combined when the card is twirled rapidly, thus illustrating the persistence of visual impressions.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.