implacental

[ im-pluh-sen-tl ]

adjective

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

noun

1. an implacental mammal.

implacental

/ ˌɪmpləˈsɛntəl /

adjective

1. See aplacental
   another word for aplacental

Word History and Origins

Origin of implacental¹

First recorded in 1830–40; im- ² + placental ( def )

Example Sentences

Implacental, im-pla-sen′tal, adj. having no placenta, as certain marsupial animals.

From Project Gutenberg

The air had now become suitable for mammals, both placental and implacental, and for birds.

From Project Gutenberg