aplacental

American

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

adjective

Zoology.

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

aplacental British

/ ˌæplə-, ˌeɪpləˈsɛntəl /

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

Etymology

Origin of aplacental

First recorded in 1855–60; a- ⁶ + placental ( def. )

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023