バイセクシュアリティMeanings1nounbisexualityRefers to sexual or romantic attraction to both men and women. The Japanese synonym 両性愛 is also used.See also: 両性愛バイセクシュアリティは、異い性せいと同どう性せいの両りょう方ほうに惹ひかれる性せい的てき指し向こうです。Bisexuality is a sexual orientation where one is attracted to both the opposite and the same sex.