When you only measure the length and not the width, this is an example of linearity.
- the quality or state of being linear
- the extent to which any signal modification process, as detection, is accomplished without amplitude distortion
- the fidelity with which a televised image is reproduced as determined by the extent to which there is a uniform distribution of the picture elements on the screen
- Physics the extent to which any effect is exactly proportional to its cause
- The state of being linear.
- (mathematics) A relationship between several quantities which can be considered as proportional and expressed in terms of linear algebra, or any mathematical property of a relationship, operation or function that is analogous to such proportionality, satisfying additivity and homogeneity.
From linear +"Ž -ity.