epi·du·ral
ˌe-pi-ˈd(y)u̇r-əl
: situated upon or administered or placed outside the dura mater
epidural anesthesia
an epidural abscess
: an injection of a local anesthetic into the space outside the dura mater of the spinal cord in the lower back region to produce loss of sensation especially in the abdomen or pelvic region
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Merriam-Webster unabridged
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