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epidural

[ep-i-doo r-uh l, -dyoo r-]
adjective
  1. Anatomy. situated on or outside the dura mater.
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noun
  1. Pharmacology. epidural anesthesia.
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Origin of epidural

1880–85; < epi- + dur(a mater) + -al1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for epidural

epidural

adjective
  1. Also: extradural upon or outside the dura mater
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noun
  1. Also called: epidural anaesthesia
    1. injection of anaesthetic into the space outside the dura mater enveloping the spinal cord
    2. anaesthesia induced by this method
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Word Origin

C19: from epi- + dur (a mater) + -al 1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for epidural

adj.

1882, from epi- + dura (mater) (see dura mater). The noun meaning "injection into the epidural region" (usually during childbirth) is attested by 1970.

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Online Etymology Dictionary, © 2010 Douglas Harper

epidural in Medicine

epidural

(ĕp′ĭ-durəl)
adj.
  1. Located on or over the dura mater.
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n.
  1. An injection into the epidural space of the spine.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

epidural in Science

epidural

[ĕp′ĭ-durəl]
Adjective
  1. Located on or over the dura mater.
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Noun
  1. An injection into the epidural space of the spine, as an epidural anesthetic.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.