Usage History of 'rotation'

The following chart shows how frequently 'rotation' appeared in printed materials over time. For example, the word 'rotation' occurred 4 times in books in 1590 and 517,660 times in 2008. From 1590 to 2008, the word 'rotation' was used a total of 15,803,414 times in books scanned by Google. See Reference: Google Ngram project.

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