viroid

vi·roid

V0116375 (vī′roid′)n. An infectious particle, similar to but smaller than a virus, that consists solely of a strand of RNA and is capable of causing disease in plants.

viroid

(ˈvaɪrɔɪd) n (Biochemistry) any of various infective RNA particles, smaller than a virus and known to cause some plant diseases[C20: from vir(us) + -oid]

vi•roid

(ˈvaɪ rɔɪd)

n. an infectious agent of plants similar to a virus but consisting of only a short, single strand of RNA without a protein coat.

Thesaurus

Noun

viroid - the smallest of viruses; a plant virus with its RNA arranged in a circular chromosome without a protein coatvirusoidplant virus - a plant pathogen that is a virus consisting of a single strand of RNA

viroid

viroid,

microscopic infectious agent, much smaller than a virusvirus,
parasite with a noncellular structure composed mainly of nucleic acid within a protein coat. Most viruses are too small (100–2,000 Angstrom units) to be seen with the light microscope and thus must be studied by electron microscopes.
..... Click the link for more information. , that infects higher plants such as potatoes, tomatoes, chrysanthemums, and cucumbers, causing stunted or distorted growth and sometimes death. It can be transmitted by pollen, seed, or farm implements. Viroids are single strands of RNA and lack the protein coat of viruses. They do not code for any specific protein but are able to replicate themselves in the nuclei of infected cells. Some scientists believe viroids are parts of normal RNA that have gone awry. Potato spindle tuber viroid was the first to be identified.

viroid

[′vī‚rȯid] (microbiology) The smallest known agents of infectious disease, characterized by the absence of encapsidated proteins.

viroid

[vi´roid] any of a class of infectious agents consisting of a small strand of RNA not associated with any protein. The RNA does not code for proteins and is not translated; it is replicated by host cell enzymes. Viroids are known to cause several plant diseases.

vi·roid

(vī'royd), An infectious pathogen of plants that is smaller than a virus (MW 75,000-100,000) and differs from one in that it consists only of single-stranded closed circular RNA, lacking a protein covering (capsid); replication does not depend on a helper virus, but is mediated by host cell enzymes. [virus + G. eidos, resemblance]

viroid

(vī′roid′)n. An infectious particle, similar to but smaller than a virus, that consists solely of a strand of RNA and is capable of causing disease in plants.

vi·roid

(vī'royd) A viruslike agent of plant diseases containing RNA but no protein. [virus + G. eidos, resemblance]

viroid

a virus-like pathogenic structure consisting of an RNA molecule, but with no protein coat.

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Synonyms for viroid

noun the smallest of viruses

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