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intrathecal

American  
[in-truh-thee-kuhl] / ˌɪn trəˈθi kəl /

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.

Other Word Forms

  • intrathecally adverb

Etymology

Origin of intrathecal

First recorded in 1885–90; intra- ( def. ) + theca ( def. ) + -al 1 ( def. )

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“It must not be used by the intrathecal, epidural, intravenous or any other unspecified routes,” the company wrote.

From New York Times • Jul. 31, 2018

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.