Definition of marsupial rat in English:

marsupial rat

noun

  • 1An opossum of the South American genus Monodelphis (family Didelphidae), having a short tail and an undeveloped marsupial pouch.

  • 2A marsupial mouse; specifically Dasyuroides byrnei, which has a bushy tail and is found in Australian deserts and grassland.

Origin

Mid 19th century; earliest use found in Henry Walter Bates (1825–1892), naturalist.