I. (ˈ)mär|süpēəl, (ˈ)mȧ|- adjective
Etymology: New Latin marsupi um + English -al
1. : having a pouch for carrying the young
2. : of, relating to, or constituting a marsupium
3.
[New Latin Marsupialia ]
: of or relating to the Marsupialia
II. noun
( -s )
: a marsupial mammal : one of the Marsupialia