After reaching the minimum brightness in late 1973, the star gradually brightened.

Juveniles have a black beak which gradually brightens to orange in the adults.

Todd's eyes had been gradually brightening to a glow that was nearly fervid.

They had a light dinner and a big breakfast and set out again toward gradually brightening lands.

The lights came on, dim at first, but brightening gradually.

Now, in the gradually brightening daylight, Ben continued his climb.

So now they sat there watching the sky gradually brighten.

Both men ran on, without speaking, under the gradually brightening sky of early morning.

The light, which had been dim, brightened gradually, promising a pleasant morning.

It wakes you with a 50-watt halogen lamp that gradually brightens at the same rate as the rising sun.