Definition of "relativity" in English

noun

1. (uncountable) The state of being relative to something else; the absence of universally applicable rules or standards; relativism; (countable) an instance of this.

2. (uncountable, physics) Ellipsis of principle of relativity (“the principle that the laws of physics should be the same for all observers”).

3. (countable, chiefly in the plural) An evaluation of the similarities and differences between things; a comparison; hence, a difference in position or status between things; a disparity.