noun
sexual characteristic
Biological term referring to physical traits that distinguish the sexes. Often used in medical or academic contexts. Compare with 性徴 (せいちょう), which is more common in everyday biology education.
See also: 性徴
性形質の発現にはホルモンが関与している。
Hormones are involved in the expression of sexual characteristics.
The sexual characteristics of this animal differ greatly between males and females.