Definition - What does Viral mean?
Viral is a buzzword used to describe any content or media that becomes widely shared through social networks and online. The concept of “going viral” extends to many mediums, including videos, photos, games, articles, or even advertisements.
Techopedia explains Viral
The concept of going viral did not originate with the Internet and is not relegated to online networks. Ideas can become viral, as can fashion choices and car decals. With the advent of social media, however, there are dependable mechanisms for the right type of content to go viral. YouTube, Facebook, Twitter, and other networks provide a platform whereby momentum is given to popular content, helping it spread virally across the web.