Dictionary.com
definitions
  • synonyms

virion

[vahy-ree-on, vir-ee-]
noun
  1. the infectious form of a virus as it exists outside the host cell, consisting of a nucleic acid core, a protein coat, and, in some species, an external envelope.
Show More

Origin of virion

< French virion (1959), equivalent to viri(en) viral (see virus, -ian) + -on -on1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for virions

virion

noun
  1. a virus in infective form, consisting of an RNA particle within a protein covering
Show More

Word Origin for virion

C20: from vir (us) + ion
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for virions

virion

n.

coined in French, 1959, from virus (see virus) + -on.

Show More
Online Etymology Dictionary, © 2010 Douglas Harper

virions in Medicine

virion

(vīrē-ŏn′, vîrē-)
n.
  1. A complete viral particle, consisting of RNA or DNA surrounded by a protein shell and constituting the infective form of a virus.
Show More
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

virions in Science

virion

[vīrē-ŏn′, vîrē-]
  1. A complete viral particle, consisting of RNA or DNA surrounded by a protein shell and constituting the infective form of a virus. The shell, called a capsid, protects the interior core that includes the genome and other proteins. After the virion binds to the surface of a specific host cell, its DNA or RNA is injected into the host cell and viral replication occurs with eventual spread of the infection to other host cells.
Show More
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.