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[hep-uh] /ˈhɛp ə/

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


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  • Hep-a

    [hep] /hɛp/ noun 1. .

  • Hepar

    n. metallic sulfide, 1690s, from Medieval Latin, from Greek hepar “liver” (see hepatitis); so called for its color. hepar he·par (hē’pär’) n. pl. he·pat·a (hĭ-pāt’ə) The liver.

  • Heparin

    [hep-uh-rin] /ˈhɛp ə rɪn/ noun 1. Biochemistry. a polysaccharide, occurring in various tissues, especially the liver, and having anticoagulent properties. 2. Pharmacology. a commercial form of this substance, obtained from the liver and lungs of domesticated food animals, that when injected into the blood prevents coagulation: used chiefly in the treatment of thrombosis. /ˈhɛpərɪn/ noun […]

  • Heparitin sulfate

    heparitin sulfate hep·a·ri·tin sulfate (hěp’ər-ĭ-tn) n. A polysaccharide containing the same repeating disaccharide groups as heparin, it accumulates in persons with certain mucopolysaccharidoses.

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