New Frontiersman
/ˌnjuː ˈfrʌntɪəzmən/ /ˌnjuː frʌnˈtɪəzmən/noun
A person working at a new frontier; specifically a proponent of President Kennedy's New Frontier programme.
Origin
1920s; earliest use found in Science. From new + frontiersman, variant of frontierman, after new frontier.