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viroid

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noun vi·roid \ˈvī-ˌrȯid\

Definition of viroid

  1. :  any of two families (Pospiviroidae and Avsunviroidae) of subviral particles that consist of a small single-stranded RNA arranged in a closed loop without a protein shell and that replicate in their host plants where they may or may not be pathogenic



Origin of viroid

New Latin virus + English -oid


First Known Use: 1971


Learn More about viroid

  1. Medical Dictionary: Definition of "viroid" Britannica.com: Encyclopedia article about "viroid"


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