distensible
adjective
dis·ten·si·ble di-ˈsten(t)-sə-bəl 
: capable of being distended
distensibility
di-ˌsten(t)-sə-ˈbi-lə-tē
noun 
Example Sentences
Recent Examples on the Web For example, the angler fish developed such a freakishly large jaw and a distensible stomach because the fish needs to take advantage of every prey opportunity available because food is scarce so far below sea level, according to The New York Times. 
Daisy Hernandez, Popular Mechanics, 30 July 2019
Daisy Hernandez, Popular Mechanics, 30 July 2019 Word History
Etymology
distens- (from Latin distensus, past participle of distendere) + -ible
First Known Use
circa 1828, in the meaning defined above
Medical Definition
distensible
adjective
dis·ten·si·ble -ˈten(t)-sə-bəl
: capable of being distended, extended, or dilated
distensible blood vessels