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 译者Pablo,毕业于国内一流的高级翻译学院,擅长翻译各种与消费者财务监管相关的法律文件。