Usage History of 'pyritous'

The following chart shows how frequently 'pyritous' appeared in printed materials over time. For example, the word 'pyritous' occurred 4 times in books in 1741 and 340 times in 2008. From 1741 to 2008, the word 'pyritous' was used a total of 17,173 times in books scanned by Google. See Reference: Google Ngram project.

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