Meckel
/ˈmɛkl/noun
1 Anatomy and Pathology Meckel's diverticulum noun a diverticulum of the distal ileum, typically about 5 cm (2 inches) in length and located about one metre from the ileocaecal valve, present as a remnant of the proximal vitelline duct in some 3 per cent of individuals; an individual instance of this; (also) this structure regarded as a pathological condition (usually as the site of inflammation or haemorrhage).
2 Pathology Meckel's diverticulitis noun inflammation of Meckel's diverticulum.
3 Embryology Meckel's cartilage noun a cartilaginous rod or bar found in the mandibular arch of embryonic vertebrates.
Origin
Mid 19th century. From the name of Johann Friedrich Meckel the younger, German anatomist.
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