Dĭ-dĕl'phys, n.

noun

n. [Gr. δι, for δὶς, twice, double, and δελφύς, the matrix, uterus.] (Zoöl.) An animal of the marsupial tribe; — so called by Linnæus, but the term is now restricted to an American genus which includes the opossum. [Written also didelphis.]

An opossum carrying its young on its back as it climbs along a branch. — Didelphys (*D. dorsigerus*).