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See more synonyms for rat-kangaroo on Thesaurus.com
noun, plural rat-kan·ga·roos.
  1. any of several rabbit-sized, ratlike Australian kangaroos of the subfamily Potoroinae.
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Origin of rat-kangaroo

First recorded in 1840–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for rat kangaroo

rat kangaroo

  1. any of several ratlike kangaroos of the genera Bettongia, Potorous, Aepyprymnus, etc, found on the Australian mainland and in Tasmania
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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