"trinity" in the noun sense
1. three, 3, III, trio, threesome, tierce, leash, troika, triad, trine, trinity, ternary, ternion, triplet, tercet, terzetto, trey, deuce-ace
the cardinal number that is the sum of one and one and one
2. Trinity, Holy Trinity, Blessed Trinity, Sacred Trinity
the union of the Father and Son and Holy Ghost in one Godhead
3. trio, threesome, triad, trinity
three people considered as a unit
Source: WordNet® (An amazing lexical database of English)
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