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fetiparous

American  
[fee-tip-er-uhs] / fiˈtɪp ər əs /
Or foetiparous

adjective

  1. (of a marsupial) bearing young before they are fully developed.


fetiparous British  
/ fɪˈtɪpərəs /

adjective

  1. (of marsupials, such as the kangaroo) giving birth to incompletely developed offspring

"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 fetiparous

fet(us) + -i- + -parous