A viral disease or infection is caused by a virus.
...a 65-year-old patient suffering from severe viral pneumonia.
2. adjective
A viral film clip, story, or message is one that spreads quickly because people share it on social media and send it to each other.
The Facebook post soon went viral. [go +ADJ]
...viral videos.
viral in British English
(ˈvaɪrəl)
adjective
1.
of, relating to, or caused by a virus
2.
(of a video, image, story, etc) spread quickly and widely among internet users via social networking sites, e-mail, etc
3. go viral
noun
4.
a video, image, story, etc that is spread quickly and widely via the internet
Derived forms
virality (vaɪˈrælɪtɪ)
noun
virally (ˈvirally)
adverb
viral in American English
(ˈvaɪrəl)
adjective
of, involving, or caused by a virus
Examples of 'viral' in a sentence
viral
She was diagnosed with a viral infection and sent home but her condition worsened and she was taken back.
The Sun (2016)
Apparently the victims were fearful of a viral infection, but do me a favour.
Times, Sunday Times (2016)
In the age of the viral video, patience is out of fashion.
Times, Sunday Times (2016)
It's a meme that has gone viral.
Times, Sunday Times (2016)
The spotlight first turned on her six years ago, when an interview she gave about the lashings went viral.
Times, Sunday Times (2016)
THIS picture of three women sitting on a bench has gone viral as it appears they are hovering in mid-air.
The Sun (2016)
A video of a talk she made seeking financial assistance from entrepreneurs in London has gone viral on the internet.
Times, Sunday Times (2016)
Wimbledon officials gave the reason as a viral illness.
The Sun (2014)
But the good news is that viral meningitis is nowhere near as serious as bacterial meningitis.
The Sun (2015)
Yet viral social media campaigns may not be all they are cracked up to be.
Times, Sunday Times (2016)
It also reduces the number of cells in the cervix that fight off viral infections.
Westcott, Patsy Alternative Health Care for Women (1991)
He had been in hospital with viral pneumonia and we were all concerned.
The Sun (2011)
One is that artificial colonies could catch viral infections and spread them to wild insects.
Times, Sunday Times (2015)
Within hours the video had gone viral.
Times, Sunday Times (2011)
The official school photographs have now brought him global fame after going viral online.
The Sun (2013)
How easy is it to make a video go viral?
The Sun (2014)
Or perhaps a viral campaign will do.
Times, Sunday Times (2009)
What happens when an alien video goes viral?
Times, Sunday Times (2015)
His snap has now gone viral on the internet.
The Sun (2015)
While viral meningitis tends to strike more in the summer, bacterial meningitis peaks in the winter.
Times, Sunday Times (2010)
The body's need for this mineral increases greatly during a viral infection.
Martlew, Gillian & Silver, Shelley Stay Well This Winter (1989)
I was victim to a viral disease which caused me to stay in bed for some weeks.
Times, Sunday Times (2013)
He points out that it is highly infectious or viral because it spreads rapidly from the individual who is learning to other colleagues in the workplace.
Times, Sunday Times (2010)
The worst possible explanation is that some new, previously unknown viral disease has found its way into the burrows and is now taking a grip.
Times, Sunday Times (2016)
He survived typhoid and hepatitis in Bolivia and viral pneumonia in Peru.
Times, Sunday Times (2010)
When I had viral meningitis at the end of 2010 and was in hospital for more than aweek.
The Sun (2013)
In other languages
viral
British English: viral ADJECTIVE
A viral disease or infection is caused by a virus.
...a 65-year-old patient suffering from severe viral pneumonia.