Definition of rhizotomy in US English:

rhizotomy

noun

  • 1Medical herbalism or botany. Compare rhizotomisthistorical rare.

  • 2Surgery. Surgical division of a spinal nerve root, typically to relieve pain or spasticity; an instance of this.

Origin

Late 19th century; earliest use found in Robley Dunglison (1798–1869), physician and medical writer. From rhizo- + -tomy.

Pronunciation

rhizotomy

/rʌɪˈzɒtəmi/