marsupial
The origin and history of marsupial.
Etymology
From Latin marsupium, marsuppium (“pouch, purse”), from Ancient Greek μαρσύπιον (marsúpion) or μαρσύππιον (marsúppion), variants of μαρσίππιον (marsíppion), diminutive of μάρσιππος (mársippos, “bag, pouch”); with English -al.