Last Updated：2025/11/21
(biology) The local fusion of the embryonic stage of an animal to its parent for physiological exchange to promote the growth and development of the young; involves a placenta in non-egglaying mammals.
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placentation
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Source Word
placentation
Noun
countable
uncountable
Japanese Meaning
（生物学）胎盤形成、すなわち、胚が母体と局所的に融合し、胎盤を介して生理的な栄養や酸素交換が行われ、幼体の成長と発達を促す現象
（ plural ）
