- any of several grayish, brownish, or russet opossums of the genus Marmosa, inhabiting forests of Central and South America, often having a black, masklike marking on the face.
Origin of murine opossum
First recorded in 1790–1800
Also called mouse opossum.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018