noun
external genitalia; vulva
Medical/anatomical term; primarily refers to female external genitalia, but can be used for male in clinical contexts.
外陰部のかゆみが続く場合は、医師に相談してください。
If itching in the external genital area persists, please consult a doctor.
この図は女性の外陰部の構造を示し
This diagram shows the structure of the female external genitalia.
性器 is a general term for sexual organs (internal and external), whereas 外陰部 is limited to the external genitalia.
Compound of 外 (outside) + 陰 (shade, hidden, yin) + 部 (part). The term is a modern anatomical coinage.