Usage History of 'disproven'

The following chart shows how frequently 'disproven' appeared in printed materials over time. For example, the word 'disproven' occurred 4 times in books in 1721 and 1,978 times in 2008. From 1721 to 2008, the word 'disproven' was used a total of 61,333 times in books scanned by Google. See Reference: Google Ngram project.

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