trinity
//ˈtrɪnɪti//
Noun
trinitySingular
trinitiesPlural
1
(Christianity) The union of the Father, Son, and Holy Spirit as three persons in one God.
The doctrine of the Trinity is central to Christian belief.
2
A group or set of three people or things that form a unit or are closely connected.
The trinity of mind, body, and spirit is essential for overall well-being.