胎龄可以指:

  • 孕龄(Gestational age),由孕妇最后一次月经(LMP)开始时计算的怀孕期间,会比受精龄多二周。
  • 人类受精#受精龄英语Fertilization age(Fertilization age),由受精起计算的怀孕期间。

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