Thick heart muscle prevents blood from filling the left ventricle.

The rapid rate prevents the heart from filling adequately with blood; therefore, less blood is able to pump through the body.

Even so, it did not prevent them from filling their plates and their glasses generously.

In some cases, it prevents the heart from relaxing and filling with blood as it should.

The gravitational force on the heavy element that is Mercury prevented it from filling the vacuum.

The plan would prevent the city from filling 52 new positions.

This was to prevent a possible coalition government from filling the vacancies, which at the time seemed imminent.

Thus it could prevent an employer from filling a job.

In severe cases, a person may need to be placed temporarily on a ventilator to prevent the lungs from filling with blood.

Can parents prevent broadcasters from filling the airwaves with material that is inappropriate for children?