n. pl. trin·i·ties
1. A group consisting of three closely related members. Also called triunity.
2. Trinity Theology In most Christian faiths, the union of three divine persons, the Father, Son, and Holy Spirit, in one God. Also called Trine.
3. Trinity Trinity Sunday.
[Middle English trinite, from Old French, from Latin trīnitās, from trīnus, trine; see TRINE.]
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