adjective
noun
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Etymology
Origin of pandemic
First recorded in 1660–70; from Late Latin pandēm(us), from Greek pándēmos “common, public” ( pan- “all” + dêm(os) “the people” + -os adjective suffix) + -ic; see pan-
Explanation
Remember the 2009 swine flu? That was a pandemic — an illness that swept over much of the globe. People fear pandemics, and with good reason. The black plague that ran through Asia and Europe in the 1300s is believed to have killed as much as half of Europe's population, between 75 and 100 million folks. The word comes from ancient Greek — pan (meaning "all") and demos (meaning "people"), or simply put — all the people. Of course, people across the globe suffer from the seasonal flu, and many die from it. But it isn't considered a pandemic because it is generally harmless to the healthy.
Vocabulary lists containing pandemic
President Obama's Farewell Address
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Human Geography - High School
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For National Pancake Day, Words With the Greek Roots "Pan-"
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
But because a lab accident could cause a pandemic, many scientists argued that no mitigation could outweigh the risks, and such gain-of-function experiments were too dangerous to permit.
From The Wall Street Journal ● Jul. 28, 2026
Since the pandemic, the organization has sent out email and text blasts to the community offering boxes of food — only 150 boxes are available each week.
From Los Angeles Times ● Jul. 28, 2026
PayPal has to compete with the likes of Apple Pay, which saw growing adoption during the COVID-19 pandemic era.
From MarketWatch ● Jul. 28, 2026
Instead, they appear to be shaped by both individual differences and shared experiences, including major social disruptions such as the COVID-19 pandemic.
From Science Daily ● Jul. 27, 2026
Word of the spirit circles spread almost as fast as the cholera pandemic that swept the country.
From "American Spirits" by Barb Rosenstock
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Market corrections, recessions, depressions, pandemics and human folly, along with investing in individual stocks despite the standard advice to diversify your holdings, can all take a toll on retirement savings.
From MarketWatch ● Jul. 23, 2026
Outbreaks and pandemics are often accompanied by misinformation.
From The Wall Street Journal ● Jul. 16, 2026
He told the BBC: "What's really interesting is the technology is an awful lot better at designing vaccines for potential pandemics when viruses are changing."
From BBC ● Jun. 4, 2026
Negotiations are also stalled by a demand from developing countries for guarantees of equitable access to vaccines outside pandemics, as well as wranglings over financial contributions that participating pharmaceutical companies should make.
From Barron's ● May 1, 2026
Not only do archaeologists like Dobyns, Perttula, and Ramenofsky argue that unrecorded pandemics swept through the Americas, they claim that the diseases themselves were of unprecedented deadliness.
From "1491" by Charles C. Mann
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.