enorthotrope

from The Century Dictionary.

• noun A toy similar to the thaumatrope, consisting of a card on different parts of which are detached portions of a picture, which on rapid revolution appear to become joined, by virtue of the principle of persistence in visual impressions. See thaumatrope.

from the GNU version of the Collaborative International Dictionary of English.

• noun An optical toy; a card on which confused or imperfect figures are drawn, but which form to the eye regular figures when the card is rapidly revolved. See thaumatrope.