Definition of watershed infarction
medical
1
or
watershed infarct
: a localized area of ischemic tissue death in an area of the brain situated at the farthest point of blood supply from two separate cerebral arterial systems that is caused by inadequate blood flow (as from low blood pressure, vasculitis, or blood clot obstruction)
2
or
watershed stroke
: a stroke resulting from such ischemic tissue death
