Diccionario
Escribe una palabra en ingles o espanol. Ingles en azul, espanol en rosa. Toca cualquier linea para oirla.
frontier
Ingles
- 🔊 an undeveloped field of study“he worked at the frontier of brain science”
- 🔊 an international boundary or the area (often fortified) immediately inside the boundary
- 🔊 a wilderness at the edge of a settled area of a country“the individualism of the frontier in Andrew Jackson's day”