Definition of aorta in US English:

aorta

noun

  • 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.

    • ‘This is delivered by the coronary arteries, which are supplied with blood from the aorta.’
    • ‘Rabbit aortas and pig coronary arteries were used in this study.’
    • ‘At this time, the surgeon begins to develop a dissection plane between the aorta and the pulmonary artery.’
    • ‘In an embryo, the aorta and the pulmonary artery are initially a single vessel.’
    • ‘The pump device works by assisting the function of the left ventricle, improving blood supply to the aorta and so to the rest of the body.’
    • ‘The main structures to consider in the umbilical area are the aorta and the pancreas.’
    • ‘Cardiovascular infection usually occurs at the abdominal aorta or a cardiac valve.’
    • ‘The device in turn pumps the blood to the aorta, dispersing it to the rest of the body.’
    • ‘What they die of is called dissection of the aorta, the artery which leaves the heart to supply blood to the rest of the body.’
    • ‘The coronary arteries open from the beginning of the aorta and take blood to all parts of the heart tissue.’
    • ‘The most common sites include the abdominal aorta and the arteries at the base of the brain.’
    • ‘Most aortic aneurysms occur in the abdominal aorta, the main cause being arteriosclerosis.’
    • ‘He died of massive internal injuries, including the severing of his aorta - the main artery to his heart.’
    • ‘Blood exits the heart from the left ventricle into the thoracic aorta, then into the abdominal aorta.’
    • ‘This meant that the aorta, the main artery that carries the blood away from his heart was cut.’
    • ‘When the left ventricle contracts, it sends blood into the largest artery, the aorta.’
    • ‘He was stabbed three times, suffering a fatal wound to the aorta, the major blood vessel from the heart.’
    • ‘He had ended up cutting it so close to the aorta, the main blood vessel, there was dramatic and sudden blood loss.’

Origin

Mid 16th century: 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’.

Pronunciation

aorta

/eɪˈɔrdə//āˈôrdə/