richter scale

Noun
  1. A logarithmic scale of 1 to 10 formerly used to express the magnitude of an earthquake on the basis of the size of seismograph oscillations (synset 113874062)
    referred to in: geology - a science that deals with the history of the earth as recorded in rocks
    is a type of: graduated table, ordered series, scale, scale of measurement - an ordered reference standard

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