the main artery of the body, supplying oxygenated blood to the circulatory system. In humans it passes over the heart from the left ventricle and runs down in front of the backbone 主动脉
派生 aortic adjective 语源
mid 16th cent.: from Greek aortē (used in the plural by Hippocrates for the branches of the windpipe, and by Aristotle for the great artery), from aeirein 'raise'