Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- adj. Spreading rapidly and extensively by infection and affecting many individuals in an area or a population at the same time: an epidemic outbreak of influenza.
- adj. Widely prevalent: epidemic discontent.
- n. An outbreak of a contagious disease that spreads rapidly and widely.
- n. A rapid spread, growth, or development: an unemployment epidemic.
Century Dictionary and Cyclopedia
- Common to or affecting a whole people or a great number in a community; generally diffused and prevalent. A disease is said to be epidemic in a community when it appears in a great number of cases at the same time in that locality, but is not permanently prevalent there. In the latter case it is said to be endemic.
- n. A temporary prevalence of a disease throughout a community: as, an epidemic of smallpox.
- n. The disease thus prevalent.
Wiktionary
- n. A widespread disease that affects many individuals in a population.
- n. epidemiology An occurrence of a disease or disorder in a population at a frequency higher than that expected in a given time period.
- adj. Like or having to do with an epidemic; widespread
GNU Webster's 1913
- adj. (Med.) Common to, or affecting at the same time, a large number in a community; -- applied to a disease which, spreading widely, attacks many persons at the same time; See endemic.
- adj. Spreading widely, or generally prevailing; affecting great numbers, as an epidemic does
- n. (Med.) An epidemic disease.
- n. Anything which takes possession of the minds of people as an epidemic does of their bodies.
WordNet 3.0
- adj. (especially of medicine) of disease or anything resembling a disease; attacking or affecting many individuals in a community or a population simultaneously
- n. a widespread outbreak of an infectious disease; many people are infected at the same time
Etymologies
- From French épidémique, from épidémie, from Latin epidemia, from Ancient Greek ἐπιδήμιος (epidēmios), from ἐπί (epi, "upon") + δῆμος (dēmos, "people"). (Wiktionary)
- French épidémique, from épidémie, an epidemic, from Old French espydymie, from Medieval Latin epidēmia, from Greek epidēmiā, prevalence of an epidemic disease, from epidēmos, prevalent : epi-, epi- + dēmos, people; see dā- in Indo-European roots. (American Heritage® Dictionary of the English Language, Fourth Edition)
Examples
“While I've argued plenty of times before about the media's irrepressibly giddy lust for slapping the term "epidemic" on any and every problem that effects a large enough group, there are far too many obscenely overweight people across this great land of ours, and if you think it's simply a personal decision that affects no one but them and the Wal-Mart scooters whose suspension systems they push to the point of collapse, think again.”
“Mr. Vance criticized what he called an epidemic of "greed and corruption" that imposes "a hidden billion-dollar-a-year-tax on New York City's construction industry.”
The Wall Street Journal: Fraud Charged In Overbilling By Contractor
“MARC, Haiti — Haiti's cholera epidemic is adding fresh urgency to the need to upgrade the country's water and sanitation network, a pivotal step to containing the highly infectious and deadly disease that spreads through contaminated water.”
The Wall Street Journal: Haiti Scrambles to Secure Clean Water
“Now, last month, as many people know, the airlines and the FAA met to talk about just how to fix what they call epidemic delays, especially at JFK.”
“Personally, who do you think is responsible for what you call the epidemic of obesity?”
“JULIE GERBERDING, CDC DIRECTOR: It has not reach what we call the epidemic threshold in terms of deaths from influenza-like illness, but we wouldn't be surprised to see that happen given the pattern that's emerging right now ..”
“Texas Attorney General Gregg Abbott, a Republican, launched an investigation in 2005 to uncover what he called an "epidemic" of voter fraud.”
“Asked what concern the U.S. has with the word "epidemic," Andy Laine, a spokesman for the State Department in Washington, said he couldn't "go into specifics" about ongoing talks.”
“Public health experts have used the comparison to draw attention to the nation's growing prescription drug problem, which they characterize as an epidemic.”
Lists
These user-created lists contain the word ‘epidemic’.
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Headlines & Newsmakers
frugality, environment, extinction, bible, killer, jazz, cloning, dead, god, moon, global warming, bailout and 340 more...
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SCIE - statistics
Abbe-Helmert crit..., a priori probability, alphabet, total correlation, three-dimensional..., theoretical frequ..., time reversal test, three-series theorem, theoretical variable, tetrachoric corre..., absolutely unbias..., absolute error and 4171 more...
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But technically it means...
Words with technical senses resembling but not wholly reflective of vernacular usage, often because of a need for greater precision in some discipline or other.
planet, twilight, substance, zombie, sublime, type, token, natural, life, epidemic, evolution, likelihood and 12 more...
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GRE Reference
A list of words unfamiliar to me that I have repeatedly encountered in GRE question sets.
parochial, clique, salacious, aegis, ostracize, conceited, sacrilegious, inane, serendipity, gourmand, polemic, tenuous and 138 more...
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Brinstar's Words
cobalt, obfuscate, archon, wii, sniper, arcane, celerity, visage, auspicious, ether, epidemic, lich and 138 more...
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Basic English Vocabulary
Very basic words for ESL students.
contemplate, container, consumer, consultant, consensus, conscious, conscience, connection, confusion, confront, conflict, confident and 4334 more...
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vozcelik's Words
cranny, tummy, nook, sinister, cajole, frugal, chafe, wimp, booger, patriarchy, indifference, mire and 162 more...
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my dictionary
able, abnormally, abroad, absent, abstract, acceptable, acceptance, access, accessible, accession, according to, account and 4551 more...
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_mark's list
Words I like!
( personal list, favorite words, randomness )psy, nanobot, success, smack, vibration, microcosmic, springgraph, marksmanship, estranged, homoerotic, flex, fiasco and 1687 more...
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tonight's list
wurd, yo.
xylophone, hello, enjoy, exclamation, deja vu, yesterday, vacuous, sacrifice, socrates, love, pejorative, cadaver and 32 more...
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Words & Phrases #3 (Getting There...)
prescription, diminish, stringent, tone, tugboat, geek, top-notch, retrofit, paranoid, ferris wheel, fountain, apex and 8 more...
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Cool Words
Words that are awesome to use, if you can find a good place in a sentence to use them!
asunder, zero, scarecrow, chronic, crooked, aftermath, aquatic, karma, deadpan, devil, berserker, bibliotaph and 32 more...
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Words I had to look up
perennial, palatable, utility, hedonic, obfuscate, neologism, notion, capacious, anthropology, vogue, epidemic, hedonism and 64 more...
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Vocab Lesson 1: Kyle Zelenitz.
abate, acknowledge, agent, authority, devastate, epidemic, estimate, evict, impartial, industrious, infuriate, irrelevant and 3 more...
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SAT Words
SAT Words
quaff, interdigitate, commiserate, ecclectic, evanescent, repudiate, impetuous, prosaic, polemical, belie, deferential, equanimity and 70 more...
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Science_Words
motility, sessility, histology, buccal, Glucuronidation, chelating, endogenic, endemic, epidemic, exogenic, uxine
Tweets
Looking for tweets for epidemic.

djsalinger Malcolm Gladwell's thinking of behaviours as epidemic in The Tipping Point.
From yawning and shopping to smoking and suicide. May 25, 2009