marriage between relatives; consanguineous marriage
Refers to marriage between blood relatives; often used in legal, anthropological, or historical contexts.
Marriage between relatives is prohibited by law in some countries.
Historically, consanguineous marriage was common among royalty.
近親婚 is a more common term for marriage between close relatives, while 親族結婚 is a broader and more formal term that can include more distant relatives.
Compound of 親族 (しんぞく, 'relative') and 結婚 (けっこん, 'marriage'). The exact historical derivation is uncertain, but the term is transparently formed from these elements.