• (n.) A species of small opossum (Didelphus murina) ranging from Mexico to Brazil.
Mar'mose` noun [ French] (Zoology) A species of small opossum ( Didelphus murina ) ranging from Mexico to Brazil. 
The Marmose, is a marsupial quadruped resembling the opossum, but smaller, being only about 6 inches in length exclusive of the tail; the Didelphys muina of Cayenne, Didelphys dorsigera of Surinam. It carries its young about with it on its back.