triune

Adjective

triune (not comparable)

1. Both trine and one at the same time.
   • Christians believe in a triune God, meaning that he is three hypostases in perfect unity.
   • The entire member seems a dense webbed bed of welded sinews; but cut into it, and you find that three distinct strata compose it:—upper, middle, and lower. […]. This triune structure, as much as anything else, imparts power to the tail.1851 November 14, Herman Melville, chapter 86, in Moby-Dick; or, The Whale, 1st American edition, New York, N.Y.: Harper & Brothers; London: Richard Bentley, →OCLC
2. Of an artistic or literary work composed of three parts united by a single theme.
   • And, with that end, Zeus reëmerges as the divine protagonist of the triune drama.1924, Herbert Weir Smyth, “VIII. The Orestea: III. Eumenides”, in Aeschylean Tragedy, page 234