thaumatrope
noun
thau·ma·trope
| \ ˈthȯmə‧ˌtrōp\
plural -s
Definition of thaumatrope
: an optical instrument or toy that shows the persistence of an impression upon the eye and that consists of a card having on its opposite faces different designs that appear to the eye combined in a single picture when the card is whirled rapidly round a diameter by the strings that hold it
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