-thēən, -thyən adjective
Usage: usually capitalized
Etymology: Latin promethe us Promethean (from Greek promētheios, from Promētheus Prometheus, the Titan pioneer of civilization) + English -an
: of, relating to, or resembling Prometheus, his experiences, or his art ; especially : daringly original or originative
the painter's true Promethean craft — William Wordsworth
there will always be nonconformists, bitter rebels, Promethean pioneers — C.I.Glicksberg