aplacental

[ ey-pluh-sen-tl, ap-luh- ]
/ ˌeɪ pləˈsɛn tl, ˌæp lə- /

adjective Zoology.

having or forming no placenta, as the marsupials and monotremes.

Origin of aplacental

First recorded in 1855–60; a-6 + placental
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for aplacental

aplacental
/ (ˌeɪpləˈsɛntəl, ˌæplə-) /

adjective

(of monotremes and marsupials) having no placenta
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

Medical definitions for aplacental

aplacental
[ ā′plə-sĕntl ]

adj.

Having no placenta.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.