lumbar puncture

noun

: puncture of the subarachnoid space in the lumbar region of the spinal cord to withdraw cerebrospinal fluid or inject anesthetic drugs

Examples of lumbar puncture in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The next test is usually a lumbar puncture, or spinal tap, in which doctors insert a needle into the spinal canal to collect some spinal fluid. Sydney Lupkin, NPR, 24 May 2025 The diagnostic process often begins with a lumbar puncture, where a needle is inserted into the lower back to measure CSF pressure and remove a significant volume of fluid. Richard Menger Md Mpa, Forbes.com, 23 May 2025 Besides PET scans, the only similar diagnostic tool involves cerebrospinal fluid (CSF) analysis, which requires challenging and invasive lumbar punctures, or spinal taps. Bronwyn Thompson, New Atlas, 20 May 2025 For him, the worst parts of his treatment from 2022 to 2023 were the monthly visits for a lumbar puncture, when the medical team would insert a needle into his back to collect cerebrospinal fluid and administer a chemotherapy treatment directly into his spine. Amy Bizzarri, Chicago Tribune, 5 Apr. 2025 See All Example Sentences for lumbar puncture

Word History

First Known Use

1895, in the meaning defined above

Time Traveler
The first known use of lumbar puncture was in 1895

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Cite this Entry

“Lumbar puncture.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lumbar%20puncture. Accessed 6 Jun. 2025.

Medical Definition

lumbar puncture

noun
: puncture of the subarachnoid space in the lumbar region of the spinal cord to withdraw cerebrospinal fluid or inject anesthetic drugs

called also spinal tap

More from Merriam-Webster on lumbar puncture

Last Updated: - Updated example sentences
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