Water for microbiology experiments needs to be completely sterile, which is usually accomplished by autoclaving.

Upon retirement Mad Play, was found to be completely sterile.

I find that I am writing a kind of completely sterile account of their life.

"She also knew before she married him that he was absolutely and completely sterile."

The environment has to be completely sterile, absolutely dust-free.

Many Frankish couples seem to have proved completely sterile.

Aside from the skull and leg bones the pit was completely sterile.

Our apartment would be completely sterile if he had his choice.

It appears to have been a completely sterile creature.

In this time, the radiation treatment was administered and, unknown to the prisoners, they were rendered completely sterile.