marsupialize,v.|mɑːˈsjuːpɪəlaɪz| [f. marsupial + -ize.] trans. To convert into something resembling the pouch of a marsupial. 1899Brit.Med.Jrnl. 23 Dec. 102 The operator managed to marsupialise the edges of the pouch, which was drained through the abdominal wall with gauze.