Meanings of concentric layers in English

With each passing year the mollusk's secretions added new concentric layers.

BOLD and CBF were calculated within lesions and in 3D concentric layers surrounding each lesion.

Most AGATES are banded amygdules in which the silica has been laid in varicolored, concentric layers.

These metrics were measured within lesions and surrounding tissue in concentric layers exact to the 3D-lesion shape.

These balls, sometimes a little flattened, are divided into concentric layers: this is the effect of decomposition.

They are formed of concentric layers of a hard, brittle, olive-green substance, very bitter to the taste.

The suite's giant circular bed could be surrounded by multiple concentric layers of soft and floaty curtains.

I presume that these concentric layers were formed by the shrinking of the concretion, as it became compact.

These veins contain not fragments, but balls or spheres of granular diabasis,* formed of concentric layers.

In silicious sponges the spicules are composed of silica, and are generally deposited around axial rods in concentric layers.

He exists in concentric layers.

There is something peculiarly beautiful about the shape of an onion, its concentric layers gracefully covering an inner core.

An instrument inside Atlas called the calorimeter is used for measuring energy and is made up of seven concentric layers.

The yellow yelk-matter which surrounds this white yelk has the appearance in the egg (when boiled hard) of concentric layers (c).

The cells of the scoriaceous basalt are lined or filled with fine, concentric layers of chalcedony, coated and studded with bright-red oxide of iron.

Concentric layers of secrets.