UNGULA

‖Un″gu‐la (?), n.; pl. Ungulæ (#). [[L., a claw, hoof, from unguis a nail, claw, hoof.]] 1. 1. A hoof, claw, or talon.
2. 2. (Geom.) A section or part of a cylinder, cone, or other solid of revolution, cut off by a plane oblique to the base; — so called from its resemblance to the hoof of a horse.
3. 3. (Bot.) Same as Unguis, 3.
Spherical ungula (Geom.), a part of a sphere bounded by two planes intersecting in a diameter and by a line of the surface of the sphere.