triplicity
/ˈtrɪplɪsɪti/Definitions
1. noun
The state or fact of being triple; a set of three things considered together.
“The concept of the Holy Trinity is based on the triplicity of the Father, Son, and Holy Spirit.”
2. noun
A combination of three musical notes that are repeated in a specific pattern.
“The jazz musician experimented with different triplicities to create a unique melody.”