One of the mysteries of the English language finally explained.
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.
Late 19th century; earliest use found in Robley Dunglison (1798–1869), physician and medical writer. From rhizo- + -tomy.
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