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English definition of “relativity”

relativity

noun [U] uk   /ˌrel.əˈtɪv.ɪ.ti/ us    /-ə.t̬i/

relativity noun [U] (IN PHYSICS)

specialized physics either of two theories of physics giving the relationship between space, time, and energy, especially for two objects moving in different waysParticular theories and concepts in physics

relativity noun [U] (STATE OF BEING RELATIVE)

formal the state of being judged in comparison with other things and not by itselfComparing and contrasting
(Definition of relativity from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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