Definition of "triune" [tri•une]

• Being three in one. Used especially of the Christian Trinity. (adjective)
• A trinity. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Middle Ages been known as the triune kingdom of Croatia, Slavonia, and"
• "He described Saturn as "triune" in form, mistaking the rings for a planet straddled by two close moons."
• "The Trinity, as commonly accepted, Mrs. Eddy denies, though she seems to admit a kind of triune nature in God by saying over and over again that he is "Love, Truth, and Life.""