Definitions for "Pie graph"
Keywords:  graph, circular, circle, whole, sectors
(3) A graph that uses a circle divided into parts to show the parts of a set of data. The circle represents the whole set of data.
A graph that displays a data series as a circle to emphasize the relative contribution of each data item to the whole.
A circular graph that illustrates each "piece" of datum in its proper relationship to the whole "pie."