What Does Viral Mean on Social Media?
“Quickly and widely spread or popularized especially by means of social media.” That’s how Merriam-Webster defines viral, Checked against Merriam-Webster Dictionary and it answers “what does viral mean?” in one line. To go viral, in Dictionary.com’s words, is “to spread rapidly via the internet, email, or other media.” Checked against Dictionary.com
The dictionaries agree that viral is about speed and spread, and none of them puts a number on it. Checked against Merriam-Webster Dictionary, Cambridge Dictionary, Oxford Learner's Dictionaries and Dictionary.com Below: going viral, the “how many views” question, where the word comes from and the medical sense. The one-line version sits in our social media glossary.
What Does Viral Mean on Social Media?
On social media, viral describes a post that quickly becomes very popular or well known because people pass it on. Four dictionaries word it differently, and each adds a detail:
| Dictionary | Definition | What it adds | Source |
|---|---|---|---|
| Merriam-Webster | ”quickly and widely spread or popularized especially by means of social media” | Names social media as the usual channel | Checked against Merriam-Webster Dictionary |
| Cambridge Dictionary | ”used to describe something that quickly becomes very popular or well known by being published on the internet or sent from person to person by email, phone, etc.” | The routes: posted online, or passed from person to person | Checked against Cambridge Dictionary |
| Oxford Learner’s Dictionaries | ”used to describe a piece of information, a video, an image, etc. that is sent rapidly over the internet and seen by large numbers of people within a short time” | The scale: large numbers of people, short time | Checked against Oxford Learner's Dictionaries |
| Dictionary.com | go viral: “to spread rapidly via the internet, email, or other media” | The idiom form, for something in the act of spreading | Checked against Dictionary.com |
How a viral social media post sounds in conversation (our examples):
- “The bakery’s icing video went viral overnight.”
- “That thread is going viral, and my notifications won’t stop.”
- “It isn’t viral, just popular with our regulars.”
How posts spread differs by app. For TikTok, our FYP explainer covers how videos reach the For You page.
What Does Going Viral Mean?
Going viral means spreading rapidly right now. Dictionary.com defines the idiom go viral as “to spread rapidly via the internet, email, or other media,” Checked against Dictionary.com and the tense tells you where things stand: it’s going viral (spreading as you watch), it went viral (it happened), it could go viral (not yet).
Viral describes what happened to a post, not what kind of post it is. A meme, a news story, a thread or a vlog can all go viral.
How Many Views Is Viral?
Myth check: how many views make a post viral? No set number. None of the Merriam-Webster, Cambridge, Oxford Learner’s or Dictionary.com definitions sets a count of views or shares that makes something viral; they describe speed and spread.
Checked against Merriam-Webster Dictionary, Cambridge Dictionary, Oxford Learner's Dictionaries and Dictionary.com.
So when a page says viral starts at a certain number of views, that’s a rule of thumb, not the word’s meaning. Our glossary’s Viral entry puts it the same way: no fixed number of views makes something viral.
Because the test is speed and spread, viral is relative. The same view count can be a breakout for a new account and an ordinary week for a large one.
Where the Word Viral Comes From
Viral comes from virus. Merriam-Webster traces it to virus plus -al and gives a first known use of 1937, but that date belongs to the medical sense, “of, relating to, or caused by a virus.” It gives no date for the social-media sense, so “going viral” does not date from 1937. Checked against Merriam-Webster Dictionary
| Term or sense | Merriam-Webster’s date | Source |
|---|---|---|
| viral: “of, relating to, or caused by a virus” | First known use 1937 | Checked against Merriam-Webster Dictionary |
| viral marketing | First known use 1989 | Checked against Merriam-Webster Dictionary |
| viral: “quickly and widely spread or popularized especially by means of social media” | No date given | Checked against Merriam-Webster Dictionary |
Merriam-Webster defines viral marketing as “marketing designed to disseminate information (as about a new product) very rapidly by making it likely to be passed from person to person especially via electronic means.” Checked against Merriam-Webster Dictionary That’s the same person-to-person picture Cambridge uses for the social sense, but the 1989 date belongs to the marketing term, not to everyday “going viral.”
Viral in the Medical Sense
In medicine, viral keeps its first meaning: “of, relating to, or caused by a virus.” That’s the sense Merriam-Webster dates to 1937. Checked against Merriam-Webster Dictionary Context tells you which one you’re reading. If a doctor calls your sore throat viral, a virus caused it; if a friend calls your sore-throat video viral, it’s everywhere.
Want More Reach? Where to Go Next
This page defines the word; it can’t make a post spread, and the definitions don’t say how. For that, our guides take it one platform at a time: how to get more views on TikTok and how to get more views on YouTube.
For brands, two habits help with the word itself. Don’t call your own post viral in its caption before it is; let the spread speak for itself. And when something does take off, consider pinning it to your profile.
Frequently Asked Questions
What does it mean when something goes viral?
It means it is spreading rapidly, usually online. Dictionary.com defines go viral as “to spread rapidly via the internet, email, or other media,” and Merriam-Webster defines viral as quickly and widely spread or popularized, especially by means of social media.
How many views is considered viral?
There is no set number. None of the Merriam-Webster, Cambridge, Oxford Learner’s or Dictionary.com definitions sets a count of views or shares that makes something viral; they describe speed and spread. A “viral threshold” you see quoted is a rule of thumb, not part of the definition.
Where did the term ‘going viral’ come from?
From virus. Merriam-Webster traces viral to virus plus -al, with a first known use in 1937, but only for the sense “of, relating to, or caused by a virus.” It gives no date for the social-media sense. The related term viral marketing has a first known use of 1989, also per Merriam-Webster.
Is viral good or bad?
Neither, by definition. The dictionary senses describe speed and spread, not quality: Merriam-Webster’s is “quickly and widely spread or popularized especially by means of social media.” Whether going viral is welcome depends on what spread and why.