Ischemia is the medical term for what happens when your heart muscle doesn't get enough oxygen. Ischemia usually happens because of a shortage of blood and oxygen to the heart muscle.It is usually caused by a narrowing or blockage of one or more of the coronary arteries (which supply blood to the heart muscle).schemia is the medical term for what happens when your heart muscle doesn't get enough oxygen. Ischemia usually happens because of a shortage of blood and oxygen to the heart muscle.
The slug is a unit of mass associated with Imperial units and United States customary units. It is a mass that accelerates by 1 ft/s 2 when a force of one pound (lbF) is exerted on it.
Definition of slug. slug. noun. a commuter who hitchhikes a ride with an unknown driver at a designated pickup point. Often used to take advantage of High Occupancy Vehicle (HOV) lanes during commute hours. I pulled up to the slug line, called out my destination, and scooped up some slugs. See more words with the same meaning: travel companion. Last edited on Aug 21 2012.