primary fissure

noun

Medical Definition of primary fissure

: a fissure of the cerebellum that is situated between the culmen and declive and that marks the boundary between the anterior lobe and the posterior lobe

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“Primary fissure.” The Merriam-Webster.com Medical Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/medical/primary%20fissure. Accessed 10 December 2019.

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