Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “epidemic”


noun [C]     /ˌepɪˈdemɪk/
a situation in which a large number of people get the same disease over the same period of time : the AIDS epidemicPassing on illness and causing disease
(Definition of epidemic noun from the Cambridge Learner's Dictionary © Cambridge University Press)

Definitions of “epidemic” in other dictionaries

Word of the Day


the skill or activity of preparing and cooking food

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More