From Middle English pollucion, from Anglo-Norman pollutiun, Middle French pollution, pollucion, and their source, post-classical Latin pollūtiō ("defilement, desecration; nocturnal emission") (4th century), from the participial stem of polluō, from por- + -luō, related to lutum and luēs. Compare Ancient Greek λῦμα and λῦμαξ, Old Irish loth, Lithuanian lutynas.
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