1ep·i·dem·ic adj \ˌep-ə-ˈdem-ik\
: affecting or tending to affect an atypically large number of individuals within a population, community, or region at the same time <typhoid was epidemic>—compare endemic, sporadic 1
: of, relating to, or constituting an epidemic <coronary disease…has hit epidemic proportions—Herbert Ratner>
—ep·i·dem·i·cal·ly \-i-k(ə-)lē\ adverb
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