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viroid
vi·roid [ v ròyd ] (plural vi·roids)


noun 
Definition:
 
infectious agent: an infectious RNA particle that resembles a virus, but is smaller. It causes diseases in plants.
[Mid-20th century. <virus]
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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