Definify.com
Webster 1913 Edition
Lemniscate
{
Lemˊnis-ca′ta
(lĕmˊnĭs-kā′tȧ)
, Lem-nis′cate
(lĕm-nĭs′kā̍t)
, } Noun.
[L.
lemniscatus
adorned with ribbons, fr. lemniscus
a ribbon hanging down, Gr. λημνίσκος
.] (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.