<p><strong>Noun</strong></p><ul><li>the state or fact of being relative.</li><li>a theory, formulated essentially by Albert Einstein, that all motion must be defined relative to a frame of reference and that space and time are relative rather than absolute concepts.</li><li>the theory dealing with uniform motion (special theory of relativity or special relativity) is based on the two postulates that physical laws have the same mathematical form when expressed in any inertial system, and the velocity of light is independent of the motion of its source.</li><li>the theory dealing with gravity (general theory of relativity or general relativity) is based on the postulate that the local effects of a gravitational field and of acceleration of an inertial system are identical.</li><li>dependence of a mental state or process upon the nature of the human mind: relativity of values; relativity of knowledge.</li></ul><p><strong>End of Response</strong></p>