viroid

vi·roid

 (vī′roid′)

n.

An infectious particle, similar to but smaller than a virus, that consists solely of a strand of RNA and is capable of causing disease in plants.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

viroid

(ˈvaɪrɔɪd)

n

(Biochemistry) any of various infective RNA particles, smaller than a virus and known to cause some plant diseases

[C20: from vir(us) + -oid]

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

vi•roid

(ˈvaɪ rɔɪd)

n.

an infectious agent of plants similar to a virus but consisting of only a short, single strand of RNA without a protein coat.

Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

Thesaurus

Noun

1.

viroid - the smallest of viruses; a plant virus with its RNA arranged in a circular chromosome without a protein coat virusoid plant virus - a plant pathogen that is a virus consisting of a single strand of RNA

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