/kong"koyd/ , n. Geom.
a plane curve such that if a straight line is drawn from a certain fixed point, called the pole of the curve, to the curve, the part of the line intersected between the curve and its asymptote is always equal to a fixed distance. Equation: r = b ± a sec(t).
[ 1790-1800; konchoeidés. See CONCH, -OID ]