Usage History of 'aprotic'

The following chart shows how frequently 'aprotic' appeared in printed materials over time. For example, the word 'aprotic' occurred 12 times in books in 1927 and 838 times in 2008. From 1927 to 2008, the word 'aprotic' was used a total of 46,751 times in books scanned by Google. See Reference: Google Ngram project.

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