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.
Noun. 1. concentricity-the quality of having the same center (as circles inside one another). circularity, disk shape-the roundness of a 2-dimensional figure. eccentricity-a circularity that has a different center or deviates from a circular path. Translations.