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Definition of Costal cartilage
1. Noun. The cartilages that connect the sternum and the ends of the ribs; its elasticity allows the chest to move in respiration.
Medical Definition of Costal cartilage
1. The cartilage forming the anterior continuation of a rib, providing the means by which it reaches and articulates with the sternum. Synonym: cartilago costalis, costicartilage. (05 Mar 2000)