1. An isolated, remote, or sparsely populated geographical area or landscape
The hikers ventured into the lonely terrain of the desert.
Os caminhantes se aventuraram pelo terreno solitário do deserto.
2. A desolate or uninhabited region lacking human presence or civilization
The lonely terrain of the mountains was breathtaking but eerie.
O terreno solitário das montanhas era de tirar o fôlego, mas sinistro.