trivium
/ˈtrɪvɪəm/noun
- historical an introductory course at a medieval university involving the study of grammar, rhetoric, and logic〈史〉（中世纪大学的）三学科（即语法、修辞、逻辑）。比较QUADRIVIUM.
词源
early 19th cent.: from Latin, literally 'place where three roads meet', from tri- 'three' + via 'road'.