phalloplastyPronunciation: /ˈfalə(ʊ)ˌplasti/Definition of phalloplasty noun [mass noun] Medicine plastic surgery performed to construct, repair, or enlarge the penis. Origin: late 19th century: from Greek phallos 'phallus' + -plastyphalloplasty in other Oxford dictionaries Definition of phalloplasty in the US English dictionary