Aortic: Pertaining to the aorta, the largest artery in the body. "Aortic" is in common usage as, for example, in an abdominal aortic aneurysm. The term "aortal" has the same meaning but is rarely encountered (except in The New York Times crossword). IMAGES See Images From Healthy Heart Resources Psoriasis and Heart HealthCrohn's Disease and Your HeartCommon Health Conditions Among Minorities Featured Centers Good and Bad Foods for PsoriasisVideo: Getting Personal on Life With MS Health Solutions From Our Sponsors Shot-Free MS Treatment Your Child and COVID-19