D defs.my
Entry 1 sense Webster, 1913

Limaçon

/(lē̇`mȧ`sôN")/ · Li·ma·çon · IPA
01 n. A curve of the fourth degree, invented by Pascal. Its polar equation is r = a cos θ + b.
  1. 1.
    A curve of the fourth degree, invented by Pascal. Its polar equation is r = a cos θ + b.(Geom.)