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Webster 1913 Edition

Adj.

[Pref.

tri-

+ L.

unus

one. See

Being three in one; – an epithet used to express the unity of a trinity of persons in the Godhead.

Adj.

[L. tres and unus.] Three in one; an epithet applied to God, to express the unity of the Godhead in a trinity of persons.

triune ‎(not comparable)

Threefold, having three components that are both separate and united; said especially of the Trinity of Christian doctrine.