Purgatory is a Christian notion mainly associated with the Latin Rite of the Catholic Church. The Catholic Encyclopedia defines it as follows:
Purgatory (Lat., "purgare", to make clean, to purify) in accordance with Catholic teaching is a place or condition of temporal punishment for those who, departing this life in God's grace, are, not entirely free from venial faults, or have not fully paid the satisfaction due to their transgressions.
- Edward Hanna, The Catholic Encyclopedia vol. 12, "Purgatory" (New York: Robert Appleton Company, 1911). <http://www.newadvent.org/cathen/12575a.htm>.
- Helena Petrovna Blavatsky, Collected Writings vol. VII (Wheaton, IL: Theosophical Publishing House, ???), 227.