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.
The War of Ruses, as it became known, ended with Pandemic Horde's retreat.
From BBC • Jun. 5, 2026
During this time, James was rising through the ranks to become fleet commander of one of the game's largest alliances - Pandemic Horde - tasked with directing thousands of players in battle.
From BBC • Jun. 5, 2026
This discovery reshapes understanding of the First Pandemic by providing clear evidence of large-scale mortality and offering insight into how people lived, moved and became vulnerable within ancient urban environments.
From Science Daily • Apr. 23, 2026
Pandemic technology reliance fostered an expectation of a frictionless existence, including in our romantic lives.
From Salon • Mar. 8, 2026
Pandemic, pan-dem′ik, adj. incident to a whole people, epidemic.—n. a pandemic disease.—n.
From Chambers's Twentieth Century Dictionary (part 3 of 4: N-R) by Various
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.