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viroid
(redirected from Viroids)

    Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia 0.14 sec.
vi·roid (vroid)
n.
An infectious particle, smaller than a virus, that consists solely of a strand of RNA and is capable of causing disease in plants.
viroid
the smallest known infectious agent consisting of a small circular RNA molecule of only 300 to 400 nucleotides that replicates entirely by means of host enzymes since the viroid RNA codes for nothing. It causes a number of important diseases in plants but has not been identified in animals.


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