The term isothermal layer refers to a layer of atmosphere where the temperature remains the same. It is also called the constant-temperature layer or the homogeneous layer. This layer is important as it affects the distribution of weather patterns and can impact aviation and space science. Some synonyms for this term include the isothermal region, thermally stable layer, temperature-consistent zone, and uniform-temperature sphere. Each of these terms describes the same phenomenon where the temperature remains steady instead of fluctuating with altitude. Understanding these synonyms can help to communicate the concept of the isothermal layer more effectively in different contexts and with a wider range of audiences.