Dipodomys \Dipodomys\ n. a genus of rodents of the family {Heteromyidae}, comprising the genus of kangaroo rats which live in arid regions of Mexico and the western U. S. Note: An Australian rodent of the genus {Notomys} is also referred to as a {kangaroo rat}, as is the potoroo. See {kangaroo rat} Syn: genus {Dipodomys}. [WordNet 1.5 +PJC]