Definition of "quadrivium" []

• The higher division of the seven liberal arts in the Middle Ages, composed of geometry, astronomy, arithmetic, and music. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Boethius seems to have been the first to use the term quadrivium, joining music with the mathematical arts of arithmetic, geometry, and astronomy."
• "The traditional quadrivium is essentially the study of pattern, harmony, symmetry and order in nature and mathematics viewed as a reflection of the Divine Order."
• "B1 is thus the earliest text to identify the set of sciences that became known as the quadrivium in the middle ages and that constitute four of the seven liberal arts."