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Sterilisation

From Biology-Online Dictionary
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sterilisation

1. (Science: technique) The complete destruction or elimination of all living microorganisms, accomplished by physical methods (dry or moist heat), chemical agents (ethylene oxide, formaldehyde, alcohol), radiation (ultraviolet, cathode) or mechanical methods (filtration).

2. (Science: procedure) The use of surgery, radiation or chemicals to render an organism incabable of sexual reproduction.