periaqueductal
adjective
peri·aq·ue·duc·tal
-ˈak-wə-ˌdək-tᵊl 
: of, relating to, or being the gray matter which surrounds the aqueduct of Sylvius
Cite this Entry
“Periaqueductal.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/periaqueductal. Accessed 31 Oct. 2025.
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