avascular /āvas″kyələr/ [Gk, a, without; L, vasculum, vessel] , 1. pertaining to a tissue area that is not receiving a sufficient supply of blood. The reduced supply may be the result of blockage by a blood clot or of the deliberate stoppage of flow during surgery or during control of a hemorrhage. 2. pertaining to a kind of tissue that does not have blood vessels.
