Quadrivium

·noun The four "liberal arts," arithmetic, music, geometry, and astronomy;

— so called by the schoolmen. ·see Trivium.

quadrivium
quā̆drĭvĭum, ii, n. [quattuor-via]. I Lit., a place where four ways meet , a crossway , cross-ro...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
quadrivium
quadrivium ī, n quattuor + via, a place where four ways meet, cross-way, cross-road , Iu., Ct. ...

An Elementary Latin Dictionary