[lit-yoo-uh
s] 
[lit-yoo-ahy] . | 1. | 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: θr2 = a. |
| 2. | (in ancient Rome) a crook-shaped staff used by augurs for divination. |