basic material

This furnace is designed for tilting, and is lined with basic material, and large electrodes pass through the roof.

The rocks thus extruded are mainly composed of dark, heavy basic material, such as basalt and andesite.

Every material interest except the basic material interest of our human existence is represented in our periodical press.

After all is said, a discussion of ways and means must follow such a mastery of basic material.

The basic material of which all glass is made is, of course, sand.