Definition of nerve root in US English:

nerve root

noun

  • 1Anatomy. A bundle of nerve fibres as it emerges from the neuraxis; especially either of the paired (dorsal and ventral) bundles of nerve fibres that emerge from the spinal cord and unite to form a spinal nerve.

  • 2Any of various North American lady's slipper orchids having roots used to make medicinal preparations for the nerves; especially Cypripedium calceolus and C. acaule.

Origin

Mid 19th century; earliest use found in Philosophical Transactions of the Royal Society of London. From nerve + root.

Pronunciation

nerve root

/ˈnəːv ruːt/