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(Botany) the smallest virus, which affects plants and which has its RNA arranged in a circle
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a small particle of RNA associated with the larger RNA of some infectious plant viruses. Compare viroid.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||virusoid - the smallest of viruses; a plant virus with its RNA arranged in a circular chromosome without a protein coat|
plant virus - a plant pathogen that is a virus consisting of a single strand of RNA
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