acclīvĭtas — Lewis & Short
acclīvĭtas, ātis, f.acclivis,
I an ascending direction, an acclivity, ascent:
pari acclivitate collis,Caes. B. G. 2, 18; so Col. 2, 4, 10.—Concr. of the rising place itself, Amm. 14, 2, 13.