Where does “postampullary” come from?

postampullary (English) comes from English ampulla, from Latin ampulla, from Latin amphora, from Ancient Greek ἀμφορεύς, from Ancient Greek ἀμφιφορεύς, from Ancient Greek φορεύς, from Ancient Greek φορέω, from Ancient Greek φέρω — shiny, light brown.

postampullary (English): After an ampulla, as for example downstream of the ampulla of Vater in the lumen of the duodenum; structures and events that are postampullary thus exist in the midgut rather than in the foregut