单词 | pectoralis major |
释义 | pectoralis major/pɛktəˌreɪlɪs ˈmeɪdʒə/ /pɛktəˌrɑːlɪs ˈmeɪdʒə/Anatomy and Zoology noun The main muscle of the chest, involved primarily in shoulder movement (including the downward movement of the wing in birds), in humans originating from the second to fourth ribs, clavicle, and sternum and inserting on the humerus. OriginMid 18th century. From post-classical Latin pectoralis maior from pectoralis + classical Latin maior, originally after French grand pectoral. |
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