Lexic.us

Definition of Implacentalia

1. n. pl. A primary division of the Mammalia, including the monotremes and marsupials, in which no placenta is formed.

Medical Definition of Implacentalia

1. A primary division of the Mammalia, including the monotremes and marsupials, in which no placenta is formed. Origin: NL. See In- not, and Placental. Source: Websters Dictionary (01 Mar 1998)

Lexicographical Neighbors of Implacentalia

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