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intrathecal

[in-truh-thee-kuh l]
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adjective
  1. Anatomy. situated within the thecal sac: covering the spinal cord.
  2. Medicine/Medical. administered into the thecal sac: intrathecal injections.
noun
  1. Pharmacology. anesthesia administered into the thecal sac: She was given an intrathecal during labor.

Origin of intrathecal

First recorded in 1885–90; intra- + theca + -al1
Related formsin·tra·the·cal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
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