subarachnoid space
noun
: the space between the arachnoid and the pia mater through which the cerebrospinal fluid circulates and across which extend delicate trabeculae of connective tissue
Cite this Entry
“Subarachnoid space.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/subarachnoid%20space. Accessed 29 Nov. 2025.
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