Solarium may refer to: Sunroom, a room built largely of glass to afford exposure to the sun. A Terrace (building) or flat housetop. The Solarium Augusti, a monumental meridian line (or perhaps a sundial) erected in Rome by Emperor Augustus.
Noun. 1. cavity wall-a wall formed of two thicknesses of masonry with a space between them. wall-an architectural partition with a height and length greater than its thickness; used to divide or enclose an area or to support another structure; the south wall had a small window; the walls were covered with pictures.
(wawl), [TA] 1  An investing part enclosing a cavity such as the thorax or abdomen, or covering a cell or any anatomic unit. A wall, as of the thorax, abdomen, or any hollow organ. 2  Synonym(s): paries [TA] [ 3 L. vallum] 4  A part of a structure that encloses a cavity, chamber, or other anatomical unit.