purificatio
From LSJ
Latin > English (Lewis & Short)
pūrĭfĭcātĭo: ōnis, f. purifico,
I a purifying, purification (post-Aug.): laurus purificationibus adhibetur, Plin. 15, 30, 40, § 138: religionis, Mart. 8 praef.: sanguis purificationis suae, Vulg. Lev. 12, 4: purificatio, καθαρμός, Gloss. Cyril.