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
Recent Examples on the Web
In this retrospective review, the researchers examined the past medical records of 114 chronic pain patients who had spinal cord stimulation (SCS) or intrathecal pain pump (ITP) implants.
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New Atlas, 13 Oct. 2025
In order to walk or sit, the 27-year-old requires an intrathecal pain pump in her abdomen, which delivers medicine to her spinal cord.
—Victoria Ivie, Oc Register, 30 July 2025
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.
—Jordan Greene, People.com, 2 June 2025
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New Atlas, 13 Oct. 2025
In order to walk or sit, the 27-year-old requires an intrathecal pain pump in her abdomen, which delivers medicine to her spinal cord.
—Victoria Ivie, Oc Register, 30 July 2025
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.
—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 31 Oct. 2025.
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