"study of epidemics, science of epidemic diseases," 1850, from Greek epidemios, literally "among the people, of one's countrymen at home" (see epidemic) + -logy. Related: Epidemiological; epidemiologist.
1. A report recently published in the American Journal of Epidemiology suggested that smoking increased the risk of developing non - insulin - dependent diabetes mellitus ( NIDDM ) by more than three times.
