Usage History of 'tonically'

The following chart shows how frequently 'tonically' appeared in printed materials over time. For example, the word 'tonically' occurred 2 times in books in 1815 and 1,382 times in 2008. From 1815 to 2008, the word 'tonically' was used a total of 42,266 times in books scanned by Google. See Reference: Google Ngram project.

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