Definition: The term "loessial" is a scientific term that refers to a type of soil, which can be found in various geological formations and has been used in geology for centuries. It is characterized by its high porosity, which means that it contains large amounts of fine particles (such as clay) rather than sand or gravel. This property makes loessial soil suitable for use in construction projects because it allows water to infiltrate more easily into the soil and reduces the amount of runoff from