noun
co-insurance
Insurance arrangement where multiple insurers share the risk of a single policy. Technical term used in insurance and finance contexts.
このプロジェクトは共同保険でカバーされています。
This project is covered by co-insurance.
Compound of 共同 (kyōdō, 'joint, cooperative') and 保険 (hoken, 'insurance'). The term is a direct calque from English 'co-insurance'.