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.