[ im-pluh-sen-tl ]
/ ˌɪm pləˈsɛn tl /


Zoology. having no placenta, as a monotreme or marsupial.


an implacental mammal.


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Also im·pla·cen·tate [im-pluh-sen-teyt] /ˌɪm pləˈsɛn teɪt/.

Origin of implacental

First recorded in 1830–40; im-2 + placental Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for implacental

British Dictionary definitions for implacental

/ (ˌɪmpləˈsɛntəl) /


another word for aplacental
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