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      frontier
      
	
      英 ['fr?nt??; fr?n't??]
美[fr?n't?r]

      


	    
      
	
        
    
      • n. 前沿；邊界；國(guó)境
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      • adj. 邊界的；開(kāi)拓的
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      • n. (Frontier)人名；(法)弗龍捷
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      英英釋意
      
	
      
	
      1. a wilderness at the edge of a settled area of a country;
      "the individualism of the frontier in Andrew Jackson's day"
      

      2. an international boundary or the area (often fortified) immediately inside the boundary
      

      3. an undeveloped field of study; a topic inviting research and development;
      "he worked at the frontier of brain science"