[f. TRIUNE + -ITY, or f. TRI- + UNITY.]

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  1.  The state or attribute of being three in one. a. of the Godhead: cf. TRINITY 1 b.

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1653.  H. More, Conject. Cabbal. (1713), 157. The Præxistence of the Soul, and the Triunity in the Godhead, which Pythagoras taught.

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1673.  [see TRINITY 1 b].

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a. 1711.  Ken, Hymns Evang., Poet. Wks. 1721, I. 271. We guess from Man’s co-eval Three, At God’s ador’d Triunity.

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1825.  Coleridge, Aids Refl. (1848), I. 134. The Scriptural … idea of God will, in its development, be found to involve the idea of the Triunity.

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  b.  gen.: cf. TRINITY 1 a.

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1816.  Coleridge, Lay Serm., 340. There exists in the human being … no mean symbol of Tri-unity, in reason, religion, and the will.

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1894.  Illingworth, Personality, iii. (1895), 71. The family … its abstract triunity being … personally realised in father, mother, and child.

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  2.  Three in one; a set or group of three constituting a unity. a. The Godhead conceived as three ‘persons’: = TRINITY 2.

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1621.  T. Bedford, Sin unto Death, 15. Nor is it possible to offend any one person of this Tri-vnitie, but the iniurie doth redound to them all.

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a. 1834.  Coleridge, in Lit. Rem. (1839), IV. 210. Instead of one Tri-unity we might have a mille-unity…. Sherlock … had not the clear idea of the Trinity.

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  b.  gen. = TRINITY 3.

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1646.  Unhappy Game Scotch & Eng., 8, in 4th Scarce Tracts (1752), I. 349. If another were added to that Vnity then were it a Tri-unity, and not a Bi-unity.

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  So Triunification, the action of making to be three in one; Triunion = triunity; Triunitarian, a believer in the triunity of the Godhead: = TRINITARIAN B. 2.

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1892.  Nation (N. Y.), 20 Oct., 305/3. To secure … the *triunification of Germany.

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1650.  T. Vaughan, Anima Magica, To the Author. And fix the roving thoughts in one Inseperate *Triunion.

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1827.  G. Darley, Sylvia, 199.

        Albion! thy other deathless son,—
Reigns; and with them the Grecian one,
Leagued in supreme tri-union!

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1859.  Ld. Acton, Lett. (1909), 103. The triunion representing Germany in that triumvirate would also … be president of the new Germanic confederation.

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1819.  G. S. Faber, Dispensations (1823), I. 188. Jewish commentators … cannot be said to have any of (what the Socinians would call) the prejudices of the *Triunitarians.

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