viral

adjective

vi·​ral ˈvī-rəl How to pronounce viral (audio)
1
: of, relating to, or caused by a virus
a viral infection
2
: quickly and widely spread or popularized especially by means of social media
a viral video
virally adverb

Examples of viral in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The question that led to his now-viral comments was the final one of the press conference. Saad Yousuf, New York Times, 16 Oct. 2025 From viral hits to iconic music legends, the remaining couples will dance through a variety of creative challenges, culminating in the finale. Amanda Castro, MSNBC Newsweek, 15 Oct. 2025 Jason Kelce, brother of Travis and former star of the Philadelphia Eagles, has issued a statement after a fake quote of him appearing to criticize those unhappy with the selection of Bad Bunny for the Super Bowl Halftime Show went viral. Jon Blistein, Rolling Stone, 15 Oct. 2025 Mario is setting the record straight after a viral moment from his Big Fresno Fair performance over the weekend had fans and social media criticizing his actions. Amber Corrine, VIBE.com, 15 Oct. 2025 See All Example Sentences for viral

Word History

Etymology

vir(us) + -al entry 1

First Known Use

1937, in the meaning defined at sense 1

Time Traveler
The first known use of viral was in 1937

Browse Nearby Words

Cite this Entry

“Viral.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/viral. Accessed 17 Oct. 2025.

Kids Definition

viral

adjective
vi·​ral ˈvī-rəl How to pronounce viral (audio)
1
: of, relating to, or caused by a virus
a viral infection
2
: quickly and widely spread or popularized especially by person-to-person electronic communication
a viral video

Medical Definition

viral

adjective
vi·​ral ˈvī-rəl How to pronounce viral (audio)
: of, relating to, or caused by a virus
viral infections
virally adverb

More from Merriam-Webster on viral

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!