Big acronym in purifying filters

HEPA

["Here’s a helpful hint for your crossword clue:\n\n**\"This type of filter is often found in air purifiers and vacuums, known for trapping tiny particles.\"**\n\nThis hint guides the solver toward the context of air purification and the function of the filter without directly stating the acronym or repeating the original clue. It’s easier than the original but still requires some deduction."]

The clue **"Big acronym in purifying filters"** leads to the answer **"HEPA"** through the following breakdown: 1. **Acronym**: The answer is an abbreviation, and "HEPA" stands for **High-Efficiency Particulate Air** (or sometimes **High-Efficiency Particulate Arrestance**), a type of air filter. 2. **Purifying filters**: HEPA filters are widely known for their use in air purification systems, removing fine particles from the air. 3. **Big**: This likely refers to the prominence or importance of HEPA filters in the field of air purification, as they are a major standard in filtering technology. The wordplay is straightforward, with the clue directly hinting at the acronym's meaning and common usage. No additional puns or cultural references are involved—just a clear definition-based clue.