noun
marriage following adultery and a subsequent divorce
A legal term referring to a marriage that occurs after the parties involved had an adulterous relationship, and after one or both obtained a divorce from their previous spouses. Rare in everyday conversation.
相姦婚は、法律上問題になることがある。
A marriage following adultery and a subsequent divorce can sometimes become a legal issue.
姦通 means adultery itself, while 相姦婚 refers to the marriage that follows after the adulterous relationship and a divorce.
Compound of 相姦 (adultery) and 婚 (marriage). The exact historical derivation is uncertain; the term is used in legal contexts.