'Quadrivium' definitions:

Definition of 'quadrivium'

From: WordNet
noun
(Middle Ages) a higher division of the curriculum in a medieval university involving arithmetic and music and geometry and astronomy

Definition of 'Quadrivium'

From: GCIDE
  • Quadrivium \Quad*riv"i*um\, n. [L.] The four "liberal arts," arithmetic, music, geometry, and astronomy; -- so called by the schoolmen. See Trivium. [1913 Webster]