As a Noun: 1. Extreme purity, cleanliness and freshness. 2. Total cleanliness and freedom from germs. English = sterility. As a Verb or Adjective: 1. To be extremely pure and clean, like it has never been used before. English = (be) pristine. 2. Of something, to be totally pure and healthy and medically safe because it is without any germs at all. English = (be) sterile.