limaçon

[lim-uh-son]
noun Geometry.
  1. 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 cosθ + b.

Origin of limaçon

1575–85; < French: literally, snail, Old French, derivative of limaz < Latin līmācem, accusative of līmāx snail, slug
Also called Pascal's limaçon.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for limacon

Historical Examples of limacon

  • Up there, they suppose we have gone in the direction of the Limacon; but, below, they will see the contrary.

    Cinq Mars, Complete

    Alfred de Vigny


British Dictionary definitions for limacon

limaçon

noun
  1. a heart-shaped curve generated by a point lying on a line at a fixed distance from the intersection of the line with a fixed circle, the line rotating about a point on the circumference of the circle

Word Origin for limaçon

French, literally: snail (so named by Pascal)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012