D defs.my
Entry 1 sense Webster, 1913

Quadrivium

/kwä-drĭv􂀽'ē-əm/ · Quad·riv·i·um · IPA /kwɑˈdɹɪvi.əm/
01 n. The four “liberal arts,” arithmetic, music, geometry, and astronomy; -- so called by the schoolmen. See Trivium.
  1. 1.
    The four “liberal arts,” arithmetic, music, geometry, and astronomy; -- so called by the schoolmen. See Trivium. See: Trivium