English Noun arteriovenous malformation (plural arteriovenous malformations) English Wikipedia has an article on:arteriovenous malformationWikipedia (pathology) A congenital disorder in which arteries are connected directly to veins rather than through capillaries that distribute oxygen and nutrients. These connections, often called a nidus, can be extremely fragile and prone to bleeding. Synonyms Also known by the abbreviation AVM. Translations disorder of the veins and arteries Czech: arteriovenózní malformace f Portuguese: malformação arteriovenosa f Wikiwand - on Seamless Wikipedia browsing. On steroids.