asepsis

n. absence of pathogenic microorganisms

Asepsis is the practice to reduce or eliminate contaminants (such as bacteria, viruses, fungi, and parasites) from entering the operative field in surgery or medicine to prevent infection. Ideally, a field is "sterile" — free of contaminants — a situation that is difficult to attain. However, the goal is elimination of infection, not sterility.
See more at Wikipedia.org...

Asepsis /asep·sis/ 1. freedom from infection. 2. the prevention of contact with microorganisms. a·sep·sis n. 1. [more]Asepsis - Community and Resources

Noun
1. (of non-living objects) the state of being free of pathogenic organisms
(synonym) antisepsis, sterility, sterileness
(hypernym) sanitariness
2. the process of inhibiting the growth and multiplication of microorganisms
(synonym) antisepsis
(hypernym) organic process, biological process

n. asepsis, absence of pathogenic microorganisms