Sagittal /(?)/

Sag·it·tal

Sagittal

a.
  1. Of or pertaining to an arrow; resembling an arrow; furnished with an arrowlike appendage.
  2. Of or pertaining to the sagittal suture; in the region of the sagittal suture; rabdoidal; as, the sagittal furrow, or groove, on the inner surface of the roof of the skull. (Anat.)

Phrases & Compounds
Sagittal suture
the suture between the two parietal bones in the top of the skull; -- called also rabdoidal suture, and interparietal suture.