I. ˈtrinəd.ē, -nətē, -i noun
( -es )
Etymology: Middle English Trinite, trinite, from Old French trinité, from Late Latin trinitat-, trinitas (translation of Greek trias ), from Latin, triad, from trini three each (akin to Latin tria, tres three) + -itat-, -itas -ity — more at three
1.
a.
(1) capitalized : the union of three persons or hypostases (as the Father, the Son, and the Holy Spirit) in one godhead so that all the three are one God as to substance but three persons or hypostases as to individuality : the triune God
(2) usually capitalized : the Christian doctrine of the Trinity
b. often capitalized : a union or group of three deities : triad
2. usually capitalized : trinity sunday
3.
[Middle English trinite, from Latin trinitas ]
: the state of being threefold
4.
a. : something having three parts or aspects
b. : a group of three
its trinity of churches standing in stately dignity — American Guide Series: Connecticut
5.
a. : herb trinity
b. : a common No. American spiderwort ( Tradescantia virginiana )
II. adjective
Usage: usually capitalized
1. : of, dedicated to, or bearing a symbol of the Trinity
2. : associated with or occurring on or about Trinity Sunday
Trinity Monday
3.
[from Trinity House, established in 1514 in Deptford, England]
: of or associated with a semigovernmental association of English mariners authorized by Parliament to erect and maintain English coastal lighthouses and other navigational aids and to license pilots
Trinity pilots
Trinity dues
a Trinity buoy keeper
4.
[from Trinity river, Texas]
: of or relating to a subdivision of the Comanchean — see geologic time table