n.
Pronunciation: ' tri-n ə -t ē
Function: noun
Etymology: Middle English trinite, from Anglo-French trinité, from Late Latin trinitat-, trinitas state of being threefold, from Latin trinus threefold
Date: 13th century
1 : the unity of Father, Son, and Holy Spirit as three persons in one Godhead according to Christian dogma
2 not capitalized : a group of three closely related persons or things
3 : the Sunday after Whitsunday observed as a feast in honor of the Trinity