In Brief CCC 2590
© Libreria Editrice Vaticana Source: vatican.va
"Prayer is the raising of one's mind and heart to God or the requesting of good things from God" (St. John Damascene, Defide orth. 3, 24: PG 94, 1089C).
Read the full chapter 1. The Revelation of Prayer – the Universal Call to Prayer ¶2566–2649