esophagogastroscopy

noun
esoph·​a·​go·​gas·​tros·​co·​py
variants: or chiefly British oesophagogastroscopy \ -​ˌgas-​ˈträs-​kə-​pē How to pronounce oesophagogastroscopy (audio) \
plural esophagogastroscopies

Medical Definition of esophagogastroscopy

: examination of the interior of the esophagus and stomach by means of an endoscope