Relating to the sternum and the ribs. [L. costa, rib]
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ster·no·cos·tal .stər-nō-'käs-təl adj of, relating to, or situated between the sternum and ribs <\sternocostal articulations>
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ster·no·cos·tal (stur″no-kosґtəl) [sterno- + costal] pertaining to the sternum and ribs.Medical dictionary. 2011.