To insulate, or make free of external influence.
To self-isolate.
To separate a pure strain of bacteria etc. from a mixed culture.
To separate a substance in pure form from a mixture.
To insulate an electrical component from a source of electricity.
To set apart or cut off from others.
To place in quarantine or isolation.
Something that has been isolated.
To allow or invite outside influence, investment or immigration.
To begin operating.