Colon polyp facts. 1  Colon polyps are growths on the inner lining of the colon and are very common. 2  Colon polyps are important because they may be, or may become malignant (cancerous).  Changes in the genetic material of cells lining the colon are the cause of polyps.
DEFINITION of 'Consumer Price Index-CPI'. A measure that examines the weighted average of prices of a basket of consumer goods and services, such as transportation, food and medical care. The CPI is calculated by taking price changes for each item in the predetermined basket of goods and averaging them; the goods are weighted according to their importance.
The Consumer Price Index (CPI) is a measure of the average change in price over time in a fixed market basket of goods and services bought by consumers for day-to-day living. The All Items CPI for the U.S. is the broadest, most comprehensive index, and is often quoted as the source for the rate of inflation. The CPI for All Items less Food and Energy (also sometimes referred to as the core or  underlying. CPI) excludes volatile food and energy prices.