obelion

noun
obe·​li·​on | \ ō-ˈbē-lē-ˌän, -ən How to pronounce obelion (audio) \
plural obelia\ -​lē-​ə How to pronounce obelia (audio) \

Medical Definition of obelion

: a point on the sagittal suture that lies between two small openings through the superior dorsal aspect of the parietal bones and is used in craniometric determinations

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