from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A complete viral particle, consisting of RNA or DNA surrounded by a protein shell and constituting the infective form of a virus.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A single individual particle of a virus (the viral equivalent of a cell).
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. (virology) a complete viral particle; nucleic acid and capsid (and a lipid envelope in some viruses)
vir(us) + -on1.(American Heritage® Dictionary of the English Language, Fourth Edition)