/ Dictionary / Index E epidemiology: Meaning and Definition of Find definitions for: ep•i•de•mi•ol•o•gy Pronunciation: (ep"i-dē"mē-ol'u-jē, -dem"ē-), [key] — n. the branch of medicine dealing with the incidence and prevalence of disease in large populations and with detection of the source and cause of epidemics of infectious disease. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: epidemiology (Thesaurus) epidemic pleurodynia epidendrum Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language