fastigial

adjective

fas·tig·ial fa-ˈstij-(ē-)əl

: of or associated with the fastigium of the fourth ventricle of the brain

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“Fastigial.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/fastigial. Accessed 3 Nov. 2025.

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