noun
levirate marriage; sororate marriage; marriage to deceased sibling's spouse
Anthropological term covering both levirate (marrying a deceased brother's wife) and sororate (marrying a deceased wife's sister) customs. Rare in everyday conversation; used in academic or historical contexts.
逆縁婚は、古代社会における家族の結束を保つための慣習の一つである。
Levirate/sororate marriage is one of the customs for maintaining family unity in ancient societies.