What is another word for "trinal"?

Roget's Thesaurus (1911) lists these synonyms for "trinal": cube, divide, fold, into, leash, part, place, power, root, shamrock, tern, ternary, ternion, tertiary, the, third, thirdly, three, threefold, thrice, tierce, treble, trebleness, trebly, trefoil, trey, triad, triangle, triangular, trichotomous, trichotomy, tricuspid, trident, tridentate, tridentiferous, trifid, trifoliate, triform, trifurcate, trigon.