|1.||[ adjective ] (especially of medicine) of disease or anything resembling a disease; attacking or affecting many individuals in a community or a population simultaneously|
"an epidemic outbreak of influenza"
|Related terms:||endemic endemic ecdemic medicine pestilent epizootic pandemic epiphytotic|
|2.||[ noun ] (medicine) a widespread outbreak of an infectious disease; many people are infected at the same time|
|Related terms:||outbreak pandemic|