ar·te·ri·al 
(är-tîrē-əl)
(är-tîrē-əl)adj.
1. Of, like, or in an artery or arteries.
2. Of, relating to, or being the blood in the arteries that has absorbed oxygen in the lungs and is bright red.
3. Being a main road or channel with many branches: an arterial highway; an arterial route.
n.
A through road or street.
ar·teri·al·ly adv.