purgation
pur·ga·tion
noun
1.
2.
a ceremonial cleansing from defilement or uncleanness by the performance of appropriate rites
Origin
From Middle English purgacioun, borrowed from Anglo-Norman purgacion, itself borrowed from Latin pūrgātiō; equivalent to purge + -ation.
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Narrower terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.