arterial
1. ar.te.ri.al \a:r-'tir-e--*l\ \-*-le-\ aj 1a: of or relating to an artery 1b: relating to or being the bright red blood present in most arteries tha t has been oxygenated in lungs or gills 2: of, relating to, or constituting through-traffic facilities - ar.te.ri.al.ly av 2. arterial n : a through street or arterial highway