Richter magnitude
noun
The magnitude of an earthquake or similar seismic event on the Richter scale.
Origin
1930s.
- quadroon ball
- quadrophonic
- quadrosonic
- quadrotor
- quadroxalate
- Quadrumana
- quadrumanal
- quadrumane
- quadrumanous
- quadrumvir
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- quadruped
- quadrupedal
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- quadrupedality
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- quadrupedic
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- quadruplane
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- quadruple
- quadruple algebra
- Quadruple Alliance
- quadruple counterpoint
- quadruple expansion