pioneering russian

• пионе́рский

  pioneering, pioneer

• первооткрыва́тельство

  pioneering work

• пионе́рный

  pioneering, initial, experimental, vanguard

• лиди́рующий

  leading, dominant, pioneering

• прокла́дывающий

  laying, paving, making (a path), building, constructing

  making (a way), opening (a path), forging (a path), pioneering

• прорыва́ющий

  breaking through, breaching, penetrating

  breakthrough, pioneering, revolutionary

• протори́вший

  having blazed a trail, having paved the way, pioneering

• проторявший

  paving the way, blazing a trail, pioneering, opening up

• проторяющий

  pioneering, trailblazing, pathfinding