intrathecal
adjective
in·tra·the·cal
ˌin-trə-ˈthē-kəl 
-(ˌ)trä-
: introduced into or occurring in the space under the arachnoid membrane of the brain or spinal cord
intrathecal drugs
Examples of intrathecal in a Sentence
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Her plan includes five phases: induction (weekly chemotherapy), consolidation (weekly chemotherapy plus spinal taps with intrathecal methotrexate) and a third phase every 10 days, depending on her blood counts.
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Jordan Greene, People.com, 2 June 2025
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Jordan Greene, People.com, 2 June 2025
Cite this Entry
“Intrathecal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/intrathecal. Accessed 8 Jun. 2025.
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