: an open-ended logarithmic scale for expressing the magnitude of a seismic disturbance (such as an earthquake) in terms of the energy dissipated in it with 1.5 indicating the smallest earthquake that can be felt, 4.5 an earthquake causing slight damage, and 8.5 a very devastating earthquake

Examples of Richter scale in a Sentence

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But when the topic turned to how his election could rattle the Hall’s Richter scale once his plaque hangs in that gallery in July, Suzuki couldn’t wrap his mind around that thought. Jayson Stark, The Athletic, 24 Jan. 2025 Parts of Northern California experienced the earth move on Monday from a 5.8 Richter scale reading that originated in Nevada, according to media reports. Tor Constantino, Mba, Forbes, 10 Dec. 2024

Word History

Etymology

Charles F. Richter

First Known Use

1936, in the meaning defined above

Time Traveler
The first known use of Richter scale was in 1936

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Cite this Entry

“Richter scale.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Richter%20scale. Accessed 24 Apr. 2025.

Kids Definition

Richter scale

noun
: a scale for expressing the strength of an earthquake

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