Lemniscata /(lĕm`nĭs*kā"tȧ)/

Lem·nis·ca·ta

Lemniscata

n.
  1. 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. (Geom.)