A cell is the intersection between a row and a column on a spreadsheet that starts with cell A1. Below is an illustrated example of a highlighted cell in Microsoft Excel; the cell address, cell name, or cell pointer D8 (column D, row 8) is the selected cell and the location of what is being modified.
Travertine is a natural stone that many people use in their homes. Travertine is naturally porous because it forms underground near hot springs where gases escape through the body of what becomes the slab. It is naturally porous and is a tan or whitish color.
Inside of a bone showing the trabecular structure. A trabecula (plural trabeculae, from Latin for small beam) is a small, often microscopic, tissue element in the form of a small beam, strut or rod, generally having a mechanical function, and usually composed of dense collagenous tissue (such as the trabecula of the spleen).