The Collaborative International Dictionary
Didelphys
Didelphys \Di*del"phys\, n. [NL. See Didelphia.] (Zo["o]l.)
Formerly, any marsupial; but the term is now restricted to an
American genus which includes the opossums, of which there
are many species. See Opossum. [Written also Didelphis.]
See Illustration in Appendix.
--Cuvier.