iliac(a = adj.pert) - of or relating to the ilium;

   Pertaining to ancient Ilium, or Troy. Gladstone. [1913 Webster]

1.  Pertaining to, or in the region of, the ilium, or dorsal bone of the pelvis; as, the iliac artery. [1913 Webster]

2.  See Ileac, 1. [1913 Webster]

iliac, adj. of the lower body or ilium (iliac artery).

Etymology:
LL iliacus (as ILIUM)

circumflex iliac artery, circumflex iliac vein, common iliac artery, common iliac vein, external iliac artery, external iliac vein, iliac artery, iliac vein, internal iliac artery, internal iliac vein