Definition of rachitome in English:

rachitome

noun

  • 1Surgery any of several instruments used to open the vertebral canal (now historical).

  • 2Palaeontology (usually in form rhachitome) a labyrinthodont (fossil amphibian) of the suborder Rhachitomi.

Origin

Mid 19th century; earliest use found in Robley Dunglison (1798–1869), physician and medical writer.