The ability of the CAD software to realize that a volume is filled with solid matter. These CAD systems can display a design so that it looks like a solid object. Includes recognition of surfaces and wireframes.
Dissolved and suspended matter in water. Dissolved solids are those, which are in a solution and not removed by filtration; suspended solids are removed by filtration.
Mass or matter contained in a stream, considered undesirable and should be removed; that part of the discontinuous phase removed from liquid or gas through filtration.