"Squamous" refers to a type of cell that is flat and scale-like in shape. These cells are commonly found in the outer layer of the skin and in various tissues lining the body, such as the lungs and mouth. The term is often used in medical contexts to describe certain types of epithelial cells, which play a crucial role in protecting underlying tissues. In histology, squamous cells can be classified into different categories, such as simple squamous epithelium and stratified squamous epithelium. Simple squamous epithelium consists of a single layer of flat cells, allowing for efficient gas exchange, while stratified squamous epithelium has multiple layers, providing more protection against physical and chemical stress.