Usage History of 'birthroot'

The following chart shows how frequently 'birthroot' appeared in printed materials over time. For example, the word 'birthroot' occurred 2 times in books in 1764 and 27 times in 2008. From 1764 to 2008, the word 'birthroot' was used a total of 1,705 times in books scanned by Google. See Reference: Google Ngram project.

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