From Longman Dictionary of Contemporary Englishaortaa‧or‧ta /eɪˈɔːtə $ -ˈɔːr-/ noun [countable] HBHthe largest artery that takes blood away from your heart
Examples from the Corpus
aorta• It was a mercy we did, for X-rays revealed not only back trouble, but a massive abdominal aorta aneurysm.• No expression was detected in aorta, vena cava and other rabbit tissues.• In these accidents the air-bag punch-out forces caused a ruptured aorta, rib fractures, severe myocardial contusions, etc.• Now, I may fear a collapsed bridge or an inadvertently sliced aorta.• The most critical is a life-threatening weakness in the aorta -- the major blood vessel from the heart.• Aneurysms of the aorta and other vessels: .• We suggest that this is misleading as different workers have used different sizes of the aorta to define an aneurysm.• The third important complication of cardiovascular syphilis is the development of aneurysms in the wall of the aorta or other major arteries.Origin aorta (1500-1600) Modern Latin Greek aorte, from aeirein “to lift” 