from The American Heritage® Dictionary of the English Language, 4th Edition

  • abbr. high-efficiency particulate air
  • abbr. high-efficiency particulate arresting

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • High Efficiency Particulate Air filter.


Sorry, no etymologies found.


  • We have a total of 11 beds for stem cell transplantation, all in HEPA-filtered rooms in a special HEPA-filtered unit that includes a playroom and exercise room.

    Blood and Marrow Transplantation Program

  • Allergists recommend purifiers that can filter out particles at least as small as 20 microns, the size of pollen (so-called HEPA filters, which must meet certain government standards, will do the trick).

    Eight Surprising Allergy-Fighting Tactics

  • They have things that are called HEPA filters, designed for that very purpose, but they were telling us because of so much in the air they're actually getting clogged up, and some of that is actually still coming inside.

    CNN Transcript Oct 24, 2007

  • The department of energy regulates the standards for a filter to be called a HEPA filter.


  • Lengthy documents submitted to the Environment Minister on the RoD amendment yesterday provided new evidence that High-Efficiency Particulate Air filters, commonly known as HEPA filters, to be used in the fuel plant have inherent vulnerabilities that are potentially catastrophic.


  • A better paper accordian style "HEPA" type filter is available for these machines, but is can't be washed and is more expensive than the one that comes with them.

    Epinions Recent Content for Home

  • "Many of our grants don't use the term 'mold remediation,' but do provide specific remediation, which might include wet vacuuming, damp wiping or HEPA -- high-efficiency particulate air -- vacuuming of interior spaces," said Manuel Broussard, FEMA spokesman in New Orleans.

    Susan Buchanan: Post-Katrina, Mold Worries Subside But Hardly Disappear

  • I'm a conscientious parent, but I'm not a HEPA filter, she says.

    Keeping her a kid as long as possible

  • Use an air cleaner with a HEPA filter in the bedroom and living room, or in the room that the child spends the most time.

    Environmental allergy control

  • When vacuuming carpet or upholstered furniture, use a HEPA filter in the vacuum or use a 2-ply vacuum bag.

    Atopic dermatitis, eczema treatments


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