ACCLIVITY, the Steepness, or Slope of a Line or Plane inclined to the Horizon; reckoned upwards. See INCLINED PLANE.

The Ascent of a Hill is an Acclivity; the Descent of the same a Declivity. See DECLIVITY.

Some Writers of Fortification use Acclivity for Talus.See TALUS.

The word is compounded of the Latin ad and clivus, Hill, Eminence.