/lem nis"kit, lem"nis kayt', -kit/ , n. Analyt. Geom.
a plane curve generated by the locus of the point at which a variable tangent to a rectangular hyperbola intersects a perpendicular from the center to the tangent. Equation: r 2 =2 a 2 cos(t). Also called Bernoulli's lemniscate .
[ 1775-85; lemniscatus adorned with ribbons. See LEMNISCUS, -ATE 1 ]