{ Lem`nis*ca"ta (l&ebreve;m`n&ibreve;s*kā"t&adot;), Lem*nis"cate (l&ebreve;m*n&ibreve;s"k&asl;t), } n. [L. lemniscatus adorned with ribbons, fr. lemniscus a ribbon hanging down, Gr. lhmni`skos.] (Geom.) A curve in the form of the figure 8, with both parts symmetrical, generated by the point in which a tangent to an equilateral hyperbola meets the perpendicular on it drawn from the center.