arterial(a = adj.pert) - of or involving or contained in the arteries; "arterial disease"; "the arterial system"; "arterial blood"
Derived form noun artery₁

1.  Of or pertaining to an artery, or the arteries; as, arterial action; the arterial system. [1913 Webster]

2.  Of or pertaining to a main channel (resembling an artery), as a river, canal, or railroad. [1913 Webster]

arterial, adj.
1 of or relating to an artery (arterial blood).
2 (esp. of a road) main, important, esp. linking large cities or towns.

Etymology:
F art{eacute}riel f. art{egrave}re artery

arterial blood, arterial blood gases, arterial blood vessel, arterial plaque, arterial pressure, arterial road, arterial sclerosis