• WordNet 3.6
    • n aorta the large trunk artery that carries blood from the left ventricle of the heart to branch arteries
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Webster's Revised Unabridged Dictionary
  • Interesting fact: The aorta, which is largest artery located in the body, is about the diameter of a garden hose
    • n Aorta (Anat) 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.☞ In fishes and the early stages of all higher vertebrates the aorta divides near its origin into several branches (the aortic arches) which pass in pairs round the œsophagus and unite to form the systemic aorta. One or more pairs of these arches persist in amphibia and reptiles, but only one arch in birds and mammals, this being on the right side in the former, and on the left in the latter.
    • ***
Century Dictionary and Cyclopedia
  • Interesting fact: A blue whale's aorta (the main blood vessel) is large enough for a human to crawl through.
    • n aorta In anatomy, the main trunk of the arterial system, issuing from the left ventricle of the heart, conveying arterialized blood to all parts of the body except the lungs, and giving rise, directly or indirectly, to all the arteries of the body except the pulmonary. The name is chiefly given to such an artery in those higher vertebrates which have a completely four-chambered heart. The aorta commonly gives off immediately the great vessels of the head, neck, and anterior limbs, and ends by forking to supply the posterior limbs. In the embryo it communicates with the pulmonary artery by a duct (ductus arteriosus), which is normally closed at birth. In man the aorta is divided into ascending, transverse, and descending portions. The ascending aorta rises and then curves over to the left, forming the transverse portion or arch of the aorta, whence spring the innominate and left carotid and left subclavian arteries; it then descends upon and a little to the left of the bodies of the vertebræ, forming the descending aorta, divided into the thoracic aorta below it; it ends usually opposite the fourth lumbar vertebra by bifurcating into the right and left common iliac arteries. The thoracic branches are numerous, but small and chiefly intercostal; the abdominal branches are the cœliac, superior and inferior mesenteric, renal, suprarenal, spermatic, and others. The aorta is provided at its beginning with three semilunar valves, which prevent regurgitation of blood into the heart. See aortic, and cuts under circulation, embryo, heart, thorax.
    • n aorta In the higher invertebrates, the large blood-vessel leading from the heart, usually anteriorly and posteriorly.
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Chambers's Twentieth Century Dictionary
    • n Aorta ā-or′ta the great arterial trunk which, rising from the left ventricle of the heart, sends its branches ramifying through the whole body—in man subdivided into the arch, the thoracic aorta, and the abdominal aorta
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Webster's Revised Unabridged Dictionary
NL., fr. Gr. , fr. to lift, heave
Chambers's Twentieth Century Dictionary
Gr. aortēaeir-ein, to raise up.


In literature:

I've seen him jab all round the aorta until it made me jumpy to watch him.
"Round the Red Lamp" by Arthur Conan Doyle
Three similar valves were found at the opening of the aorta into the left ventricle.
"The Great Events by Famous Historians, Volume 11" by Various
The aorta was at least one half larger than usual, especially at its arch.
"Cases of Organic Diseases of the Heart" by John Collins Warren
The pulsation of the aorta can be seen just above the prominence formed by the left bronchus.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition." by Alexander Miles
Physiology, now adds a fourth, in which the aorta and pulmonary artery were found to have changed places.
"North American Medical and Surgical Journal, Vol. 2, No. 3, July, 1826" by Various
Arteries are also obstructed by the breaking off of particles of a plug or clot, partly obstructing the aorta or other large artery.
"Special Report on Diseases of Cattle" by U.S. Department of Agriculture
In its ascent, it lies anterior to the spine, and by the side of the aorta and oesophagus.
"A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition)" by Calvin Cutter
The ventricle leads into a single anterior median aorta.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 2" by Various
It pierced the lung and the aorta.
"Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 4" by Various
Broadly speaking, 50% of cases of general dropsy are due to disease of the heart or aorta, and 25% to renal troubles.
"Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 7" by Various

In news:

The aorta is the main blood vessel that carries blood from the heart to the rest of the body.
As blood flows through the aorta, the weak area bulges like a balloon and there is danger of it bursting if it gets too big.
City creates new office to coordinate NOPD's " aorta of corruption".
Coarctation of the aorta &mdash.
Roethlisberger's rib injury threatens aorta .
Allerseelen Herbst Schwarzer Rab Aorta.
Coarctation of the aorta &mdash.
Thoracic Aorta Access Tips Presented at VEITH Symposium.
Helical CT evaluation of the thoracic aorta .
The development of helical CT and multidetector-row CT technology has revolutionized the noninvasive imaging of the thoracic aorta .
Doctors in Alabama and Georgia hope the invention that stanches blood flow through the abdominal aorta will improve the care of lower-body wounds.
City creates new office to coordinate NOPD's "aorta of corruption".
The aorta is the largest artery in the body.
Later that morning, Dr Thomas Harvey (with Einstein 's executor, Otto Nathan, in attendance) performed the autopsy, which revealed "an abdomen full of blood" from the fatal breach of Einstein 's aorta.
During last year's race, as he neared the Superior Dome and the finish line, he tore his body's largest artery, the aorta.