/zol"ing euhr el"euh seuhn/ , Pathol.
a condition in which a gastrin-secreting tumor of the pancreas or small intestine causes excessive secretion of gastric juice, leading to intractable peptic ulcers.
[ after Robert Milton Zollinger (born 1903) and Edwin Homer Ellison (1918-1970), U.S. surgeons, who described it in 1955 ]