HEPA

[ hep-uh ]

adjective

1. 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.

Word History and Origins

Origin of HEPA¹

First recorded in 1960–65; abbreviation of h(igh-)e(fficiency) p(articulate) a(ir)

Example Sentences

Hepa was, however, the name of a Hittite and Mitannian goddess.

From Project Gutenberg

It has, accordingly, been inferred that Ebed-Hepa belonged to that race.

From Project Gutenberg

The fortified city of Ebed-Hepa was, no doubt, identical with the later Jebusite city.

From Project Gutenberg

The letters of Ebed-Hepa cease without telling us whether or not the Habiri captured his city.

From Project Gutenberg

May the king hearken unto Ebed-Hepa, thy servant, and send mercenaries that the land of the king may remain unto the king.

From Project Gutenberg