Some fell to the deck and he saw that they were thin discs of crystalline rock, about a foot in diameter.

The ship was unchanged, but the cone floating ahead of it had shrunk to a thin disc.

The laser flash method is used to measure thermal diffusivity of a thin disc in the thickness direction.

He pulled a slim black rectangle from his pocket, then shook an even thinner disc from inside it.

Might it not be a disc, thin as paper, or concave, a form of parachute?

She was carrying a basket filled with round, thin discs of bread and a few dates.

Suddenly from the darkness came a thin disc, one side yellow and the other side white, appearing suspended in midair.

The opposite end had a much smaller hoop in which a very thin disc of colored glass was secured.

He drew in a long slow breath and flicked open the back, a thin disc of gold.

They seem related to cameos, but the common medium was watercolor on thin discs of slick ivory.