Antonyms of adj transplacental

1 sense of transplacental

Sense 1
transplacental -- (occurring through or by way of the placenta; "transplacental passage of nutrients")

INDIRECT (VIA placental) -> aplacental -- (having no placenta; "monotremes and marsupials are aplacental mammals")

Similarity of adj transplacental

1 sense of transplacental

Sense 1
transplacental -- (occurring through or by way of the placenta; "transplacental passage of nutrients")
       => placental (vs. aplacental) -- (pertaining to or having or occurring by means of a placenta; "all mammals except monotremes and marsupials are placental mammals")