How do you spell Trine

Available Definitions:
1)  a. - Threefold; triple; as, trine dimensions, or length, breadth, and thickness.
2)  n. - The aspect of planets distant from each other 120 degrees, or one third of the zodiac; trigon.
3)  n. - A triad; trinity.
4)  v. t. - To put in the aspect of a trine.