ˈthȯmə.ˌtrōp noun
( -s )
Etymology: Greek thauma miracle, wonder + English -trope
: 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
• thau·ma·trop·i·cal | ̷ ̷ ̷ ̷|träpə̇kəl adjective