quadrivium
noun
qua·driv·i·um kwä-ˈdri-vē-əm 
: a group of studies consisting of arithmetic, music, geometry, and astronomy and forming the upper division of the seven liberal arts in medieval universities compare trivium
Example Sentences
Recent Examples on the Web Herschel believed that music belonged as one of the four liberal arts of the quadrivium, alongside arithmetic, geometry and astronomy. 
New York Times, 27 June 2022
New York Times, 27 June 2022 Word History
Etymology
Late Latin, from Latin, crossroads, from quadri- + via way — more at way
First Known Use
1804, in the meaning defined above