RELATIVITY
relativity
(noun) the quality of being relative and having significance only in relation to something else
relativity, theory of relativity, relativity theory, Einstein's theory of relativity
(noun) (physics) the theory that space and time are relative concepts rather than absolute concepts
Source: WordNet® 3.1
Noun
relativity (usually uncountable, plural relativities)
The state of being relative to something else.
(physics) The principle that the laws of physics should be the same for all observers.
(relativity) Either of two theories (special relativity or general relativity) developed by German-American physicist Albert Einstein. Also called Einsteinian relativity.
Source: Wiktionary
Rel`a*tiv"i*ty (-tv"-t), n.
Definition: The state of being relative; as, the relativity of a subject.
Coleridge.
Source: Webster’s Unabridged Dictionary 1913 Edition