Also with capital initial. A condition or place of spiritual cleansing and purification; (Roman Catholic Church) a place or state where the souls…

That cleanses: see the verb; spec. of cosmetics.

Of or relating to purgatory or purgation; having the quality of spiritually cleansing or purifying.

Serving to cleanse or purify, esp. morally or spiritually; that frees of sin or evil; (Theology) designating the first stage of spiritual advancement.

That purifies; that has the quality or effect of purifying.

Of or relating to purgatory (also figurative); (gen.) having a spiritually cleansing or purifying quality.