A course is a continuous horizontal layer of similarly-sized building material one unit high, usually in a wall.

The cutting orientation must be almost exactly along the horizontal layers.

One side had eroded to show the horizontal layers of strata.

Modern technology permits up to four horizontal layers being taken from a single hide.

Embedded within it are paper-thin horizontal layers of white glass.

It is baked without a spit and thus does not have circular rings but horizontal layers.

Seismic reflection is used for imaging of nearly horizontal layers in the Earth.

They were in fairly smooth flight between two horizontal layers of cloud.

A computer screen would display the data, showing the various strata as a series of horizontal layers.

Their positioning was in horizontal layers according to the church canon.