interference of the blood supply to a tissue or organ; often refers to narrowing or blocking of an artery by spasm or atherosclerosis.
is-KEY-mee-uh Local anemia due to mechanical obstruction (usually arterial narrowing) of the blood supply. See transient ischemic attack (TIA). An ischemic stroke involves a blood clot that forms and blocks the flow of blood to the brain.
Reduced blood flow in narrowed arteries.