👉 The term "imperial" in relation to measurement systems refers to a system of measurement that is based on the length, breadth and height of an object. It is often used in countries such as the United States and Japan where these three dimensions are measured in meters (m), feet (ft) and centimeters (cm). Imperial units also include pounds and ounces, which are commonly used for measuring weight. These systems have been around since ancient times and continue to be used by many people today.