<p><strong>Adjective</strong></p><ul><li>threefold;</li><li>triple.</li><li>of or relating to the trigon aspect of two planets distant from each other 120°, or the third part of the zodiac.</li></ul><p><strong>Noun</strong></p><ul><li>a set or group of three; triad.</li><li>(initial capital letter) the Trinity.</li><li>Astrology: a trine aspect of two planets, indicative of ease and accomplishment.</li></ul>