Definition that contains plant virus
- tobacco mosaic virus the widely studied plant virus that causes tobacco mosaic; it was the first virus discovered (1892)
- viroid the smallest of viruses; a plant virus with its RNA arranged in a circular chromosome without a protein coat
- virusoid the smallest of viruses; a plant virus with its RNA arranged in a circular chromosome without a protein coat
- tmv the widely studied plant virus that causes tobacco mosaic; it was the first virus discovered (1892)