Matching Pairs Sterilisation Definitions MatchOnline version Match sterilisation terms with their definitions. by Lauren 1 Sterilisation 2 Microorganisms 3 Aseptic technique 4 Autoclave 5 Disinfection 6 Ethylene oxide 7 Asepsis 8 Sterile barrier 9 Dry heat sterilisation Sterilisation using hot air without moisture. Elimination of many pathogens; spores often survive. Moist heat under pressure used to sterilise instruments. The absence of disease causing microorganisms. Destruction of all microorganisms and spores. Microscopic organisms such as bacteria, viruses and fungi which live on both living tissue and inanimate objects. The steps taken to prevent contact with microorganisms Gaseous method of sterilisation for heat-sensitive items. A packaging system that maintains sterility.