chiasmatic groove

noun

Medical Definition of chiasmatic groove

: a narrow transverse groove that lies near the front of the superior surface of the body of the sphenoid bone, is continuous with the optic foramen, and houses the optic chiasma

called also optic groove

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“Chiasmatic groove.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/chiasmatic%20groove. Accessed 21 Sep. 2020.

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