Entry 1 sense Webster, 1913 Sternal · Ster·nal · IPA /ˈstɝ.nl̩/ 01 a. Of or pertaining to the sternum; in the region of the sternum. 1. Of or pertaining to the sternum; in the region of the sternum.(Anat.) Phrases & compounds Sternal ribs — See the Note under Rib, n., 1.