| NOUN | animal | plant virus | a plant pathogen that is a virus consisting of a single strand of RNA |
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| Meaning | A plant pathogen that is a virus consisting of a single strand of RNA. | |
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| Narrower | onion yellow-dwarf virus | The virus that produces stunting and yellowing of the leaves of onion plants |
| potato yellow-dwarf virus | The virus that produces stunting and yellowing of the leaves of potato plants | |
| tobacco mosaic virus, TMV | The widely studied plant virus that causes tobacco mosaic | |
| viroid, virusoid | The smallest of viruses | |
| Broader | virus | (virology) ultramicroscopic infectious agent that replicates itself only within cells of living hosts |
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