Such a fistula may be the anastomosis of a natural artery and vein, a bovine graft, or a synthetic polytetrafluoroethylene (PTFE) graft. The bovine graft is taken from the bovine carotid artery and anastomosed to the vein and artery of the patient.
Definition of verify. verified. ; verifying. transitive verb. 1 : to confirm or substantiate in law by oath. 2 : to establish the truth, accuracy, or reality of verify the claim.
Introduction | History of Verificationism. Verificationism (also known as the Verifiability Criterion of Meaning or the Verification Principle) is the doctrine that a proposition is only cognitively meaningful if it can be definitively and conclusively determined to be either true or false (i.e. verifiable or falsifiable).