Usage History of 'gonad'

The following chart shows how frequently 'gonad' appeared in printed materials over time. For example, the word 'gonad' occurred 2 times in books in 1782 and 8,254 times in 2008. From 1782 to 2008, the word 'gonad' was used a total of 360,568 times in books scanned by Google. See Reference: Google Ngram project.

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