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English definition of “the Richter scale”

the Richter scale

noun [S] uk   /ˈrɪk.tə.skeɪl/ us    /-t̬ɚ-/
a system used to measure the strength of an earthquake: The earthquake in Mexico City registered 7.1 on the Richter scale.Earthquakes and volcanic eruptions
(Definition of the Richter scale from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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