We don't have synonyms for rhizomania yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are rhizomatic, rhizomelia and rhizomata.
(n) :
An abnormal development in the taproots of some plants, especially sugar beet, characterized by fine, hairy secondary roots; it is caused by the infection of the plant with a virus transmitted by a protozoan.
(n) :
An abnormal development in the taproots of some plants, especially sugar beet, characterized by fine, hairy secondary roots; it is caused by the infection of the plant with a virus transmitted by a protozoan.