Aseptic

I heard that Tom has been taken into an aseptic room.

We're learning about aseptic packaging.

Doctors are treating a Los Angeles woman for aseptic meningitis, an irritation of the membrane that covers the brain. Preliminary tests suggest she has the West Nile virus, but tests to confirm its presence will take several days.

The lack of aseptic tools during surgery has resulted in many deaths.

Pharmaceuticals are packaged using aseptic techniques.