This question is phrased strangely: are you are asking what the term is for the destruction of all microbial life (like microbial genocide)? Or are you asking what CAN totally destroy all forms of microbial life (like penicillin or bleach)?
Sterilization is necessary because there are billions of microbial organisms on everything. Microbial organisms are what cause most illnesses. Sterilization kills these microbial organisms.
Sterilization
There have been reports of microbial life on Jupiter's moon Europa.
Only microbial life would have survived here.
there is microbial organisms or bacterial remains found
Life cannot exist on Mercury.
microbial mush
sterilization
No. There's no life on Mercury.
One of the most promising places to search for microbial life on Mars is within the subsurface water-ice of the planet's polar regions. The presence of ice provides a potential habitat for microorganisms, as water is a critical ingredient for life as we know it. Additionally, areas with past or present hydrothermal activity, such as hot springs or geothermal vents, could also hold clues to potential microbial life on Mars.
Tom Fenchel has written: 'Bacteria and mineral cycling' -- subject(s): Mineral metabolism, Ecology, Bacteria, Microbial metabolism 'The Origin and Early Evolution of Life' -- subject(s): Origin, Life, Evolution (Biology) 'Bacterial biogeochemistry' -- subject(s): Biogeochemistry, Geomicrobiology 'Manual of microbial ecology' -- subject(s): Microbial ecology, Ecology, Microbiology