- noting or using an air filter composed of a mat of dense fibers arranged in folds, designed according to federal standards to trap at least 99.97% of airborne particles measuring 0.3 microns in diameter: HEPA vacuums and air purifiers.
Origin of HEPA
H(igh-)E(fficiency) P(articulate) A(ir)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for hepa
Hepa was, however, the name of a Hittite and Mitannian goddess.Archology and the Bible
George A. Barton