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 资深译员Chris,毕业于一所培养高级翻译以及跨文化事务专家的精英大学,专注翻译各种与卫星及航天技术诉讼有关的法律文件。