coinsurerglossary / COINSURER coinsurer. An insurer who shares losses sustained under an insurance policy. See coinsurance under INSURANCE. [Cases: Insurance 2285. C.J.S. Insurance §§ 1137–1143.] 词条贡献者 译者Henry,毕业于世界顶级翻译学院,擅长翻译各种与企业管治相关的法律文件。