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HEPA

[hep-uh]

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adjective

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.

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Origin:
H(igh-)E(fficiency) P(articulate) A(ir)

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Hepa is always a great word to know.

So is slumgullion. Does it mean:

a chattering or flighty, light-headed person.

a stew of meat, vegetables, potatoes, etc.

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American Heritage

Abbreviations & Acronyms

HEPA

hamster egg penetration assay
high-efficiency particulate accumulator
high-efficiency particulate air
high-efficiency particulate arresting

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"Good writing is always a breaking of the soil, clearing away prejudices, pulling up of sour weeds of crooked thinking, stripping the turf so as to get at what is fertile beneath. It would be amusing to carry the simile further. Those bulbs that flower in the sand and wither! The gay fiction annual that has to be planted again every year! Those experimental plants from Russia, France, and Greenwich Village that are always getting winter killed—confound 'em!—is it worth while planting them again? The stocky perennial that keeps coming up and coming up—so easy to grow and so ugly. Scarlet sage that gives a touch of fiery sin to the edge of the suburbanite's concrete walk! And then the good flowers—as honest as they are beautiful! The well-ordered gar den! The climbing rose that escapes and is the most beautiful of all!"

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