/lim"euh son'/ , n. Geom.
a plane curve generated by the locus of a point on a line at a fixed distance from the point of intersection of the line with a fixed circle, as the line revolves about a point on the circumference of the circle. Equation: r = a cos(t) + b. Also called Pascal's limaçon .
[ 1575-85; limaz limacem, acc. of limax snail, slug ]