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This clue last appeared in the NYT Crossword on Friday, 26 September 2025.

Purifying filter acronym

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purifyingacronymfilter

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This clue appeared in the NYT Crossword on Friday, 26 September 2025. The answer HEPA is a 4-letter entry.

This answer appears frequently in crosswords. View HEPA answer history →

What is the answer to "Purifying filter acronym"?: HEPA
How many letters is the answer to "Purifying filter acronym"?: The answer has 4 letters.
When was this clue last seen?: This clue last appeared in the NYT Crossword crossword on Friday, 26 September 2025.
Has this crossword clue appeared before?: Yes. Variations of this clue have appeared 5 other times.

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