Implacentalia

noun plural
Im·​plac·​en·​ta·​lia | \ (ˈ)im-ˌplas-ᵊn-ˈtā-lē-ə How to pronounce Implacentalia (audio) \

Medical Definition of Implacentalia

in former classifications
: the monotremes and marsupials regarded as a systematic unit characterized by the absence or rudimentary development of a placenta

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Cite this Entry

“Implacentalia.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/Implacentalia. Accessed 24 Sep. 2020.

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