unitization clauseglossary / UNITIZATION CLAUSE unitization clause. Oil & gas. A provision in an oil-and-gas lease granting the lessee the right to unitize the leased premises, generally for enhanced-recovery operations. 词条贡献者 法律翻译Gilbert,毕业于亚洲顶尖的高级翻译学院,擅长翻译有关矿产资源领域的法律文件。