noun, plural litui /ˈlɪtyuˌaɪ/ [lit-yoo-ahy] Show IPA .
Geometry. a polar curve generated by the locus of a point moving so that the square of its radius vector varies inversely as the angle the radius vector makes with the polar axis. Equation: θr 2 = a.
(in ancient Rome) a crook-shaped staff used by augurs for divination.
1605–15; < Latin; geometrical sense from the curve's resemblance to such a staff