第だい一いち次じ性せい徴ちょう

noun

primary sexual characteristic

Biological term for sex organs present at birth, as opposed to secondary sexual characteristics that develop during puberty.

• 第だい一いち次じ性せい徴ちょうは生うまれつきの生せい殖しょく器きの違ちがいを指さす。

  Primary sexual characteristics refer to the differences in reproductive organs present at birth.