Usage History of 'pleiotropic'

The following chart shows how frequently 'pleiotropic' appeared in printed materials over time. For example, the word 'pleiotropic' occurred 4 times in books in 1911 and 4,450 times in 2008. From 1911 to 2008, the word 'pleiotropic' was used a total of 108,205 times in books scanned by Google. See Reference: Google Ngram project.

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