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viral

adj. · n.
US //ˈvaɪɹəɫ// UK //vˈaɪəɹəl// vi·ral
  1. 1 internet popularity (adj.)
    B2 Upper Intermediate Informal Computing

    describes a video, photo, or story that spreads very quickly across the internet as people share it.

    relating to or involving the rapid, exponential spread of information or content via social media and peer-to-peer sharing.

    Example

    The video of the dancing cat went viral and got millions of views in just one day.

    Example

    The marketing team hoped the short documentary would go viral, generating organic brand awareness without the need for a traditional advertising budget.

  2. 2 medical (adj.)
    B2 Upper Intermediate Technical Medicine

    caused by or relating to a virus, which is a tiny living thing that can make you sick.

    pertaining to, caused by, or of the nature of a biological virus.

    Example

    The doctor said it was a viral infection, so antibiotics would not help.

    Example

    Researchers are investigating the long-term effects of various viral strains on the human immune system to better prepare for future outbreaks.

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  1. 3 marketing (adj.)
    C1 Advanced Academic Computing

    a way of selling things where customers tell their friends about a product.

    relating to a marketing strategy that relies on individuals to pass on a marketing message to others.

    Example

    The company used viral marketing to create a lot of excitement before the phone was even released.

    Example

    The success of the campaign was attributed to its clever use of viral loops, encouraging each new user to invite several others from their contact list.

    • word of mouth
  2. 4 a popular post (n.)
    C1 Advanced Informal Computing

    an image or video that has become very popular online.

    a piece of digital content that has been circulated rapidly and widely from one internet user to another.

    Example

    She was surprised when her simple drawing became a viral overnight.

    Example

    The agency specialises in creating virals that look like amateur footage to increase their chances of being shared organically.

Origin

From virus + -al.

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