ˌlēməˈsōⁿ, ˈliməˌsän noun
( -s )
Etymology: French, literally, snail, from Old French, diminutive of limaz snail, slug, from Latin limac-, limax slug
: a plane curve consisting of the collection of points obtained by taking a fixed distance in both directions along a half line from a fixed point on a circle measured from its second intersection with the circle