insular areaglossary / INSULAR AREA insular area. A territory or commonwealth. • This phrase is used by some writers to denote the genus of which the terms territory and commonwealth are species. See COMMONWEALTH(2); TERRITORY(1). 词条贡献者 双语律师Benita,国际知名法学院金融专业,擅长翻译各类与项目开发及融资相关的法律文件。