Free from bacterial contamination, sterile; used to describe a type of food processing and packaging characterized by non-refrigerated storage and long shelf-life products (see UHT and ultrapasteurized)
free of or using methods to keep free of pathological microorganisms; "a sterile operating area"; "aseptic surgical instruments"; "aseptic surgical techniques"
Without any living organisms such as bacteria Aseptic necrosis of the hip is a loss of the blood supply to the head of the femur, but no living organisms are involved in causing this process