The three elementary subjects of literary education up to the twelfth century — Grammar, Rhetoric, and Logic. (See QUADRIVIUM.) N.B. Theology was introduced in the twelfth century.
In medieval universities, the trivium comprised the three subjects taught first, before the quadrivium.
The word is Latin, meaning “the three ways” or “the three roads”, the beginning of the liberal arts. It also serves as a root for the concept of triviality. At many medieval universities, such as Oxford, this would have been the principal undergraduate course.