limaçon

noun

noun

Etymology From French limaçon, ultimately from Latin limax (“snail”).

Geometry, Mathematics, Sciences A plane curve with polar equation ρ=a+b, sin ,θ or ρ=a+b, cos ,θ, of which the cardioid is a special case.

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.