occlude

When the nitration is completed, screw up the clamps and so occlude the two pieces of pressure tubing.

The presence of old splits is often indicated by a ridge of callous, the result of the cambium's effort to occlude the wound.

In finely divided form it has the ability to absorb or occlude gases, especially oxygen and hydrogen.

The watchmen in buildings nearby had been warned off for the time being so that their footsteps wouldn't occlude any results.

These pigmented hyaline masses probably occlude the vessels, and hence cause gangrene.