From Longman Dictionary of Contemporary Englishdistenddis‧tend /dɪˈstend/ verb [intransitive, transitive] formal MIto swell or make something swell because of pressure from inside —distended adjective a distended stomach —distension /-ˈtenʃən/ noun [uncountable] technical→ See Verb table
Examples from the Corpus
distend• But that night, after dinner, he began to groan and Lula noticed that his stomach was distended.• His interest would be aroused, his member distended.• Watching closely, Davies noticed that as the male pecked, the female's cloaca became pink and distended.• His trembling hands reached out toward the old woman, his eyes distended, enraged.• That heroine of Assassins had distended her jaws and throat and belly by means of Polymorphine, like a python.• Air is introduced into the stomach to distend it for easier visualisation.• In congestive heart failure, it is diminished because of low cardiac output and reduced arterial distending pressure.• See their gills distend with the movement and the flurry of pectoral fins that give the subtle shunting manoeuvre. 