secondary termglossary / SECONDARY TERM secondary term. Oil & gas. The term of an oil-and-gas lease after production has been established, typically lasting “as long thereafter as oil and gas is produced from the premises.” See HABENDUM CLAUSE; PRIMARY TERM. 词条贡献者 资深译员Daniel,国际知名法学院法律英语专业,擅长翻译涉及工程与建设领域的法律文件。