• (a.) Of or pertaining to the sternum and the ribs; as, the sternocostal cartilages.
(stur″no-kos´tәl) pertaining to the sternum and ribs.
Ster`no·cos'tal adjective [ Sterno- + costal .] (Anat.) Of or pertaining to the sternum and the ribs; as, the sternocostal cartilages. 
Type: Term Pronunciation: ster′nō-kos′tăl Definitions: 1. Relating to the sternum and the ribs.
of, pertaining to, or situated between the sternum and ribs.