The final state of ruin, the opposite to salvation. One who is perdition, in this life or in the first estate, is one who will not take part in the glory of God in the resurrection. These will be in a state of eternal punishment and damnation.
See 1 Moses 7:18; Daniel 12:2; John 17:12; 1 Timothy 6:9; 2 Peter 3:7; Revelation 17:8, 20:14; Alma 9:29 RAV, 12:16b OPV; Helaman 5:73 RAV, 14:18b OPV; Doctrines of the Saints 42:22, 27-39, 113:28-29; Book of Remembrance 5:34. See also Iyrin.