From Longman Dictionary of Contemporary Englishsteady state theoryˌsteady ˈstate ˌtheory noun [singular] technical HPHAthe idea that things in space have always existed and have always been moving away from each other as new atoms begin to exist → big bang theory
Examples from the Corpus
steady state theory• One was the so-called steady state theory.• The proposal that gained widest support was called the steady state theory.• There was no reasonable mechanism in the steady state theory to generate microwaves with such a spectrum.• Either explanation contradicted the predictions of the steady state theory.• The steady state theory therefore had to be abandoned. 