Definitions for virionˈvaɪ riˌɒn, ˈvɪr i-

This page provides all possible meanings and translations of the word virion

Random House Webster's College Dictionary

vi•ri•onˈvaɪ riˌɒn, ˈvɪr i-(n.)

  1. the infectious form of a virus as it exists outside the host cell, consisting of a core of DNA or RNA, a protein coat, and, in some species, an external envelope.

    Category: Microbiology

Origin of virion:

1960–65; < F virion (1959) =viri(en) viral (see virus , -ian ) +-on -on1

Princeton's WordNet

  1. virion(noun)

    (virology) a complete viral particle; nucleic acid and capsid (and a lipid envelope in some viruses)


  1. virion(Noun)

    A single individual particle of a virus (the viral equivalent of a cell).

U.S. National Library of Medicine

  1. Virion

    The infective system of a virus, composed of the viral genome, a protein core, and a protein coat called a capsid, which may be naked or enclosed in a lipoprotein envelope called the peplos.


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