\Sag"it*tal\, a. [L. sagitta an arrow: cf. F.
sagittal.]
1. Of or pertaining to an arrow; resembling an arrow;
   furnished with an arrowlike appendage.
2. (Anat.)
   (a) 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.
   (b) In the mesial plane; mesial; as, a sagittal section of
       an animal.
{Sagittal suture} (Anat.), the suture between the two
   parietal bones in the top of the skull; -- called also
   {rabdoidal suture}, and {interparietal suture}.