Meaning

verb remove impurities from, increase the concentration of, and separate through the process of distillation

verb make pure or free from sin or guilt

verb become clean or pure or free of guilt and sin

originFrom Middle English purifien, purifyen, from Old French purifier, purifiier, from Latin pūrificō, pūrificāre, from pūrus (“pure; clean”).

Etymology from Wiktionary, CC BY-SA 3.0