sterilise

verb5

1. •
   To kill, deactivate (denature), or destroy (break apart) all living, viable microorganisms and spores on a surface, in a fluid, or contained in a compound, such as culture media or a medical product.

   • The bottled juice must be heated to a temperature and for a time sufficient to attain a sterilizing temperature at the coolest point, usually the center of the bottle. — 1938
2. •
   To render a planet like Earth permanently uninhabitable to all life, including even microbes, causing their complete extinction.
3. •
   To deprive of the ability to procreate.
4. •
   To make unable to produce; to make unprofitable.
5. •
   To redact (a document), removing classified or sensitive material.

   • […] (minus, of course, any information that might identify the agent and other operational personnel), or he might code it or "sterilize" it, and reward the foreign station chief in some other way. — 1974