- 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. Source: opted
- 2. n. The ventral part of any one of the somites of an arthropod. Source: opted
- 3. n. the flat bone that articulates with the clavicles and the first seven pairs of ribs Source: wordnet
- 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. Source: webster
- 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. Source: adambom
- 6. n:100 n. the flat bone that articulates with the clavicles and the first seven pairs of ribs Source: ecdict
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