Also ep·i·dem·i·cal. (of a disease) affecting many persons at the same time, and spreading from person to person in a locality where the disease is not permanently prevalent.
extremely prevalent; widespread.
a temporary prevalence of a disease.
a rapid spread or increase in the occurrence of something: an epidemic of riots.
Origin of epidemic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for epidemically
Historical Examples of epidemically
But, as I have said, the "Tommies" all did verse—or worse—and the example was epidemically contagious.War's Brighter Side
It existed in Michigan between 1868 and 1874, but only in the latter year epidemically, and not to a very great extent.
(esp of a disease) attacking or affecting many persons simultaneously in a community or area
a widespread occurrence of a diseasean influenza epidemic
a rapid development, spread, or growth of something, esp something unpleasantan epidemic of strikes
Word Origin for epidemic
C17: from French épidémique, via Late Latin from Greek epidēmia literally: among the people, from epi- + dēmos people
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Online Etymology Dictionary, © 2010 Douglas Harper
Spreading rapidly and extensively by infection and affecting many individuals in an area or population at the same time, as of a disease or illness.
An outbreak or unusually high occurrence of a disease or illness in a population or area.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
An outbreak of a disease or illness that spreads rapidly among individuals in an area or population at the same time. See also endemic pandemic.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.