1. A situation, area, or field of activity that has not been tried, explored, or verified before; new or uncharted territory
The company ventured into untested ground with their new product line.
A empresa aventurou-se em terreno inexplorado com sua nova linha de produtos.
2. A subject or topic that lacks established knowledge, precedent, or experience
This legal case enters untested ground in international law.
Este caso legal entra em terreno inexplorado do direito internacional.