a. [f. BI- pref.2 5 + PARIETAL, f. L. pariet-em wall.] Joining the two parietal bones of the skull.

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1857.  [see BITEMPORAL].

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1859.  Todd, Cycl. Anat. & Phys., V. 183/1. The bi-parietal diameter of the fœtal head.

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