adj. 1. Threefold; triple. 2. a. Of or relating to an astrologically favorable positioning of two celestial bodies 120° apart. b. In astrology, situated 120° apart. n. 1. A group of three. 2. In astrology, the aspect of two planets when 120° apart. 3. Trine Christianity See Trinity. [Middle English, from Old French, from Latin trīnus, sing. of trīnī, three each; see trei- in the Appendix of Indo-European roots.] |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.