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1876, "putrefaction," from Modern Latin sepsis, from Greek sepsis "putrefaction," from sepein "to rot," of unknown origin.
sepsis sep·sis (sěp'sĭs)
n. pl. sep·ses (-sēz)
The presence of pathogenic organisms or their toxins in the blood or tissues.
The poisoned condition resulting from the presence of pathogens or their toxins.
A severe infection caused by pathogenic organisms, especially bacteria, in the blood or tissues. If untreated, a localized infection, as in the respiratory or urinary tracts, can lead to infection in the bloodstream and widespread inflammation, characterized initially by fever, chills, and other symptoms and later by septic shock.