👉 Non-fluid, also known as solid matter or particulate matter, refers to any substance that does not flow or change shape under normal conditions. Unlike fluids like liquids and gases, which can be compressed and expand to fill their containers, non-fluids maintain a fixed volume and shape. Examples include solids like rocks, dust, and grains of sand, as well as particulate matter such as soil particles or tiny bits of debris. These materials do not flow easily and can be categorized based on their size, density, and composition, including everything from fine powders to larger aggregates. The term "non-fluid" emphasizes their inability to behave like a fluid under typical physical conditions.
