Thesaurus: sternum

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1. n. A plate of cartilage, or a series of bony or cartilaginous plates or segments, in the median line of the pectoral skeleton of most vertebrates above fishes; the breastbone.
2. n. The ventral part of any one of the somites of an arthropod.
3. n. the flat bone that articulates with the clavicles and the first seven pairs of ribs
4. 1. (Anat.) A plate of cartilage, or a series of bony or cartilaginous plates or segments, in the median line of the pectoral skeleton of most vertebrates above fishes; the breastbone. Note: The sternum is connected with the ribs or the pectorial girdle, or with both. In man it is a flat bone, broad anteriorly, narrowed behind, and connected with the clavicles and the cartilages of the seven anterior pairs of ribs. In most birds it has a high median keel for the attachment of the muscles of the wings. 2. (Zoöl.) The ventral part of any one of the somites of an arthropod.
5. A plate of cartilage, or a series of bony or cartilaginousplates or segments, in the median line of the pectoral skeleton ofmost vertebrates above fishes; the breastbone.
6. n:100 n. the flat bone that articulates with the clavicles and the first seven pairs of ribs