第だい三さんの性せい

expression, noun

third gender; third sex

Refers to a gender category beyond the male/female binary; used in discussions of gender identity and anthropology.

• 第だい三さんの性せいという概がい念ねんは、多おおくの文ぶん化かで見みられる。

  The concept of a third gender is found in many cultures.