statistical mechanics

noun

plural in form but usually singular in construction
: a branch of mechanics dealing with the application of the principles of statistics to the mechanics of a system consisting of a large number of parts having motions that differ by small steps over a large range

Word History

First Known Use

1885, in the meaning defined above

Time Traveler
The first known use of statistical mechanics was in 1885

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Cite this Entry

“Statistical mechanics.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/statistical%20mechanics. Accessed 12 Sep. 2025.

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