<p><strong>Noun</strong></p><ul><li>Christianity: the Trinity, also called Holy Trinity; the union of three persons (Father, Son, and Holy Spirit) in one Godhead, or the threefold personality of the one Supreme Being.</li><li>A representation of this in art: Rublev’s Trinity is one of the more famous icons.</li><li>Trinity Sunday (def).</li><li>A group of three; triad: The region is hampered by an unholy trinity of extremes—extreme climate, extreme poverty, and extreme ideology.</li><li>The 15th century saw the triumph of physics in the trinity of Copernicus, Galileo, and Newton.</li><li>Triunity (def 1).</li></ul><p><strong>End of Response</strong></p>