the main trunk of the arterial system, conveying blood from the left ventricle of the heart to all of the body except the lungs.
historical examples

one of these is the probability of the aortal tissues pressing upon the weapon relaxing their hold and allowing the blade to slip.
the ape, the idiot & other people w. c. morrow

the irregularity of the pulse affords some reason to suspect disorder of the aortal valves, which is not yet very considerable.
cases of organic diseases of the heart john collins warren

noun (pl) -tas, -tae (-tiː)
the main vessel in the arterial network, which conveys oxygen-rich blood from the heart to all parts of the body except the lungs

1570s, from medieval latin aorta, from greek aorte, term applied by aristotle to the great artery of the heart, literally “what is hung up,” from aeirein “to lift, heave, raise,” of uncertain origin; related to the second element in meteor. used earlier by hippocrates of the bronchial tubes. related: aortal; aortic.

aorta a·or·ta (ā-ôr’tə)
n. pl. a·or·tas or a·or·tae (-tē)
the large artery that is the main trunk of the systemic arterial system, arising from the base of the left ventricle, ending at the left side of the body of the fourth lumbar vertebra, dividing to form the right and left common iliac arteries, and whose parts are the ascending aorta, the aortic arch, and the descending aorta.
a·or’tal or a·or’tic adj.
plural aortas or aortae (ā-ôr’tē)
the main artery of the circulatory system, arising from the left ventricle of the heart in mammals and birds and carrying blood with high levels of oxygen to all the arteries of the body except those of the lungs.
aorta [(ay-awr-tuh)]

the main blood vessel of the body; it carries blood from the left side of the heart to other arteries throughout the body. (see circulatory system.)

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