hypercholesterolemia: the presence of an abnormal amount of cholesterol in the cells and plasma of the blood; associated with the risk of atherosclerosis
entity: that which is perceived or known or inferred to have its own distinct existence (living or nonliving)
cartesian coordinate: one of the coordinates in a system of coordinates that locates a point on a plane or in space by its distance from two lines or three planes respectively; the two lines or the intersections of the three planes are the coordinate axes