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1. (n.) sciatic nerve
either of a pair of nerves that originate in the sacral plexus of the lower back and extend down the buttocks to the back of the knees, where they divide into other nerves.
Etymology: (1735–45)
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| Definition of 'sciatic nerve' |
Princeton's WordNet |
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1. (noun) sciatic nerve, nervus ischiadicus
arises from the sacral plexus and passes about halfway down the thigh where it divides into the common peroneal and tibial nerves
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| Definition of 'sciatic nerve' |
U.S. National Library of Medicine |
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1. sciatic nerve
A nerve which originates in the lumbar and sacral spinal cord (L4 to S3) and supplies motor and sensory innervation to the lower extremity. The sciatic nerve, which is the main continuation of the sacral plexus, is the largest nerve in the body. It has two major branches, the TIBIAL NERVE and the PERONEAL NERVE.
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Definitions of sciatic nerve 
