a.[Z]

1. 性的，性別的
2. 兩性的；關於性關係的；性慾的
   The disease is passed on by sexual contact.

   該病透過性交傳染。

3. 【生】有性的；有性繁殖的

adj.

1. relating to the instincts, physiological processes, and activities connected with physical attraction or intimate physical contact between individuals.
2. relating to the two sexes or to gender.
3. Biology  (of reproduction) involving the fusion of gametes.
   ▸being of one sex or the other; capable of sexual reproduction.