colonic atresia (MONDO_0010562, a Monarch Disease Ontology identifier) is a congenital intestinal malformation resulting in a non-latent segment of the colon and characterized by lower intestinal obstruction manifesting with abdominal distention and failure to pass meconium in newborns. Also known as: atresia of colon, colon atresia, colonic atresia (disease), congenital atresia of colon.