Properties unchanged by size changes.

In mathematics, a function defined on an inner product space is said to have rotational invariance if its value does not change when arbitrary rotations are applied to its argument.

In cognitive linguistics, the invariance principle is a simple attempt to explain similarities and differences between how an idea is understood in "ordinary" usage, and how it is understood when used as a conceptual metaphor.

(mechanics) The principle that the laws of motion are the same in all inertial frames of reference.

Charge invariance refers to the fixed value of the electric charge of a particle regardless of its motion.