What does linear mean in measurements?

In measurements, "linear" refers to a relationship or pattern that can be represented by a straight line when graphed. This typically indicates that changes in one variable result in proportional changes in another, maintaining a constant rate of change. Linear measurements often apply to dimensions like length, width, and height, where values can be directly compared and summed. For example, in a linear measurement context, doubling the length of an object will lead to a proportional doubling of its measurement.