RANIERO GIORDANI of Pisa. Dominican theologian, born at Rivalto, died at Pisa in 1348. He studied in Paris and taught in Pisa and in other convents of his Order.
A diligent scholar and a good interpreter of St Thomas, he wrote the *Pantheologia*, which is the oldest theological dictionary. The material is arranged in alphabetical order; although drawn from various writers, it possesses doctrinal unity thanks to the author’s intelligent elaboration. The work, begun in 1331, is clearly inspired by Thomism; the influence of St Bonaventure and Alexander of Hales is also notable. It soon became widely known; the earliest known edition is that of Nuremberg, 1474, under the title *Summa et nucleus theologiae*, followed by many others (Milan 1477, Nuremberg 1486, Cologne 1486, Lyons 1519, etc.). Two short treatises are also attributed to him: *De fortuna* and *De sortibus*.