The oak trees gradually thinned, and pines began to take their place.

Their density gradually thins, or I grow used to them.

His smile gradually thinned as he picked up the drawing, touching the fine expert lines.

The air thins gradually and, at first, the pair resist.

See how rounded and gradually thinned the edges are?

Hair gradually thins as people age, although not all people are affected to the same degree.

Ben worked his way through a gradually thinning crowd out to the cesspit.

The crowd gradually thinned, until he walked alone again.

If your hair has been gradually thinning, a medical condition or hereditary hair loss could be to blame.

The graffiti followed us up, gradually thinning until a single name was repeated at intervals.