pioneer
nounmasculine/pjuˈnɐjɾu/medium
pi·o·nei·ro
Definition
Person who is among the first to explore or settle a new area or to introduce a new idea, technique, or activity.
The pioneers crossed the continent in covered wagons.
She is a pioneer in the field of artificial intelligence.
Etymology
Do francês 'pionnier', por sua vez do francês antigo 'peonier' (soldado de infantaria).