commuter marriage; living-apart-together marriage
Refers to a marriage arrangement where the couple maintains separate residences and one partner visits the other regularly, rather than cohabiting. Often discussed in the context of modern dual-career couples or historical practices.
Due to work circumstances, they chose a commuter marriage.
Compound of 通い (kayoi, 'commuting, visiting', from verb 通う kayou) and 婚 (kon, 'marriage'). The term describes a marriage pattern where one spouse regularly visits the other's residence.