PDF versionunderearth (un'-der-earth). (a) A hard fireclay forming the floor of a coal seam; underclay. (b) The soil beneath the Earth's surface. (c) The depths of the Earth.
PDF versionunderearth
PDF versionPDF versionPDF versionPDF versionunderearth (un'-der-earth). (a) A hard fireclay forming the floor of a coal seam; underclay. (b) The soil beneath the Earth's surface. (c) The depths of the Earth.