noun
heterosexual marriage; opposite-sex marriage
Refers to marriage between a man and a woman, often used in contrast with 同性結婚 (same-sex marriage).
異性結婚が当たり前だと思われていた時代もあった。
There was a time when opposite-sex marriage was taken for granted.
異性結婚と同性結婚の法的な違いについて議論する。
Discuss the legal differences between opposite-sex marriage and same-sex marriage.
Compound of 異性 (opposite sex) and 結婚 (marriage).