chiefly historical <主史>
1
- Biology a supporter of the theory that all life forms gradually progress or evolve to a higher form【生】生命进步论者。
2
- an advocate of or believer in political or social progress（政治或社会问题上）进步论者。
- Biology (of a person or theory) supporting or based on the theory that all life forms progress or evolve to a higher form【生】（人, 理论）支持生命进步论的：
progressionist evolutionists.
主张进步论的进化论者。