A linear layout is a type of user interface design that arranges elements in a single, linear direction, typically either horizontally or vertically. This layout is commonly used in mobile and web applications, as it allows for a clean and organized display of content. In a linear layout, elements are placed one after the other, without any overlapping or gaps, creating a structured and streamlined appearance. This design approach is often used to display lists, menus, and forms, making it easy for users to navigate and interact with the interface. Linear layouts are known for their simplicity and efficiency, making them a popular choice for modern design.