Usage History of 'spermatozoal'

The following chart shows how frequently 'spermatozoal' appeared in printed materials over time. For example, the word 'spermatozoal' occurred 26 times in books in 1851 and 290 times in 2008. From 1851 to 2008, the word 'spermatozoal' was used a total of 20,105 times in books scanned by Google. See Reference: Google Ngram project.

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