Atherosclerosis, or hardening of the arteries, is a condition in which plaque builds up inside the arteries. Plaque is made of cholesterol, fatty substances, cellular waste products, calcium and fibrin (a clotting material in the blood). Atherosclerosis is a type of arteriosclerosis.
The definition of comity means politeness or mutual courtesy. 1  The peaceful coexistence of most of the nations in North America is an example of comity.  An example of comity is when a classroom of children are all happily involved in a project.
nullities. 1  1a : the quality or state of being null; especially : legal invalidityb (1) : nothingness; also : insignificance (2) : a mere nothing : nonentity. 2  2 : one that is null; specifically : an act void of legal effect. 3  3 : the number of elements in a basis of a null-space.