What is the meaning of Aorta?

The great artery which carries the blood from the heart to all parts of the body except the lungs; the main trunk of the arterial system.

The liveliest part of something.

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aorta: the great artery which carries the blood from the heart to all parts of the body except the lungs; the main trunk of the arterial system.

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aorta

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aorta (the main artery of the circulatory system, responsible for carrying the blood from the heart to the rest of the body except the lungs)

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aorta (the main area of transportation in a city)

aorta (great artery)

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Source: wiktionary.org