marsupial mouse

American

noun

any of various mouse-sized to rat-sized marsupials of the family Dasyuridae, occurring in Australia, New Guinea, and Tasmania: some species are rare or endangered.
the mouselike crested-tailed Dasycercus cristicauda of Australian deserts.

marsupial mouse British

noun

any mouselike insectivorous marsupial of the subfamily Phascogalinae: family Dasyuridae

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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marsupial mouse

His team sequenced this predator’s genome as well as the genomes of several potential surrogate species, including the dunnart or marsupial mouse.

From Science Magazine ● Mar. 9, 2022

Half an hour later he killed a fat bandicoot, who was engaged at that moment in killing a tiny marsupial mouse.

From Finn The Wolfhound by Robert Hugh Buxton

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023