Definition of dissonance

The word "dissonance" has its roots in ancient Greece. The term "diaphonia" (διάφωνα) was used to describe a harsh or unpleasant sound, often attributed to the combination of two or more notes that do not harmonize. This concept was later adopted by medieval scholars, including philosopher Boethius, who translated "diaphonia" into Latin as "dissonantia." The term "dissonance" entered the English language in the 15th century, deriving from the Latin "dissonantia." Initially, it referred primarily to music, describing the unpleasant or clashing sounds produced by the combination of dissonant notes. Over time, the concept of dissonance expanded to include other areas, such as literature, philosophy, and psychology, to describe the sense of tension or discord that arises from the clash of opposing ideas or emotions.