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.
No nurse had been responsible for the procedures involved in this care, including intubation, chest tubes, umbilical central lines, lumbar punctures, ventricular taps, and more. Dawn Zuidgeest-Craft, STAT, 24 Apr. 2026 Last year, the FDA cleared the first blood test for Alzheimer’s disease, paving the way for a cheaper, less invasive alternative to lumbar punctures and PET scans. Rick Sobey, Boston Herald, 14 Apr. 2026 Liam needed to be sedated so that doctors could do a lumbar puncture for a clear diagnosis. Erika Edwards, NBC news, 2 Apr. 2026 But of course, this is a more elaborate procedure and thus more expensive than a routine bedside lumbar puncture. Paul Hsieh, Forbes.com, 31 Mar. 2026 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 30 Apr. 2026.

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

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