noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A short section of RNA but without the protein coat typical of viruses, that are plant pathogens
2. 2
   the smallest of viruses; a plant virus with its RNA arranged in a circular chromosome without a protein coat wordnet
3. 3
   Any of certain defective viruses, such as hepatitis D, a human pathogen.

Synonyms

All synonyms

viroidalesvirusoid

Etymology

From virus + -oid.

Related phrases

protein coat

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.