Significado de "frontier" - Diccionario inglés para estudiantes

frontier

noun uk us /frʌnˈtɪər/

[ C ] a line or border between two countries

the frontiers of sth

the limits of what is known or what has been done before in an area of knowledge or activity:

the frontiers of science and technology

(Definición de frontier de Cambridge Learner's Dictionary © Cambridge University Press)