viral

adjective

vi·​ral ˈvī-rəl 

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

ˈvī-rə-lē 

adverb

virality

vī-ˈra-lə-tē 

noun

Examples of viral in a Sentence

Recent Examples on the Web

Two chia seed hacks that have gone viral on TikTok recently include adding chia seeds to applesauce or jam for a high-fiber treat. —Eleesha Lockett, Verywell Health, 10 May 2026

Despite a viral online claim, scientists and doctors have repeatedly said the anti-parasitic drug ivermectin is not a proven treatment. —Mary Whitfill Roeloffs, Forbes.com, 10 May 2026

The idea took off on social media, and what started as a joke is now a viral crowdfunding campaign to revive the bankrupt carrier. —Kayla Hayempour, NBC news, 10 May 2026

Consumers who may never attend a fashion week can encounter Saudi brands through viral videos, celebrity endorsements, or influencer styling. —Fmg Studios, Footwear News, 10 May 2026

Word History

Etymology

vir(us) + -al entry 1

First Known Use

1937, in the meaning defined at sense 1

Phrases Containing viral

• viral load
• viral marketing

Rhymes for viral

• chiral
• spiral
• adenoviral
• antiretroviral
• antiviral
• retroviral

Kids Definition

viral

adjective

vi·​ral ˈvī-rəl 

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 

: of, relating to, or caused by a virus

viral infections

virally

-rə-lē 

adverb