Epidemic, a name given to contagious diseases which, arising suddenly in a community, rapidly spread through its members, often travelling from district to district, until often a whole country is affected; the theory of the transmission of disease by microbes has largely explained the spread of such scourges, but the part which atmospheric and other physical, and perhaps psychic, causes play in these disorders is still matter of debate, especially as regards epidemic mental diseases. See Endemic.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Epidaurus * Epigoni