Pronunciation: (trin'i-tē), [key]
—pl. -ties for 2, 4.
1. Also called Blessed Trinity, Holy Trinity. the union of three persons (Father, Son, and Holy Ghost) in one Godhead, or the threefold personality of the one Divine Being.
2. a representation of this in art.
3. See Trinity Sunday.
4. (l.c.) a group of three; triad.
5. (l.c.) the state of being threefold or triple.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.