viroid

noun vi·roid \ ˈvī-ˌrȯid \

Definition of viroid

: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 and Etymology of viroid

New Latin virus + English -oid


Medical Dictionary

1

viroid

noun vi·roid \ ˈvī-ˌrȯid \

medical Definition of viroid

1 :a hypothetical symbiont resembling a virus that was formerly held to be present in cells, to be favorable to the host, and to tend to mutate to a virus
2 :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

2

viroid

adjective

medical Definition of viroid

1 :caused by a virus
  • viroid pneumonia
2 :of or relating to viroids

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