plural of third-degree relative

plural of second-degree relative

plural of relative pseudo-complement

(relativity) A theory that (neglecting the effects of gravity) reconciles the principle of relativity with the observation that the speed of light is constant in all frames of reference.

(relativity) A theory extending special relativity and uniformly accounting for gravity and accelerated frames of reference, postulating that space-time curves in the presence of mass.

(relativity) The principle that only the motion of objects relative to one another can be measured, and that there is no absolute frame of reference.

(physics) The theories of special relativity and general relativity, two theories in physics developed mainly by Albert Einstein at the beginning of the 20th century from which several important results such as the equivalence of matter and energy and the Einstein field equations are derived.

plural of theory of relativity

Synonym of relativity (either Albert Einstein's special relativity or general relativity)