The triad or three-in-one
A modern phonetic spelling of Trinity, referring to the Christian doctrine of the Holy Trinity (the Father, Son, and Holy Spirit). It represents the concept of three-in-one and has been used as a virtue name since the late 20th century.
Less common today
Trinitee isn't in the latest US Top 1000. It last peaked at #1,899 in 2000.
American actress known for K.C. Undercover
US births per 5-year period, 1990βpresent (SSA data).