n. (Hira=たいばん) placenta, organ that forms on the wall of the uterus during pregnancy and carries nourishment to a growing fetus while removing waste products

n. (Simp=胎盘, Pinyin=tai1 pan2) placenta

[太半] most; the greater [best, most] part (of); the great [large] portion; the majority (of)

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[胎盤] the placenta; the afterbirth