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a·sep·sis / āˈsepsis/ • n. the absence of bacteria, viruses, and other microorganisms. ∎  the exclusion of bacteria and other microorganisms, typically during surgery. Compare with antisepsis.

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asepsis (ay-sep-sis) n. the complete absence of bacteria, fungi, viruses, or other microorganisms that could cause disease. Asepsis is the ideal state for the performance of surgical operations and is achieved by using sterilization techniques.
aseptic adj.

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asepsis The condition of an environment that is free of pathogens. This is achieved by sterilization techniques.