Dictionary.com
Thesaurus.com

polyprotodont

British  
/ ˌpɒlɪˈprəʊtəʊˌdɒnt /

noun

  1. any marsupial of the group Polyprotodontia, characterized by four or more upper incisor teeth on each side of the jaw: includes the opossums and bandicoots Compare diprotodont

"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

Etymology

Origin of polyprotodont

C19: from poly- + proto- + -odont