Usage History of 'cilium'

The following chart shows how frequently 'cilium' appeared in printed materials over time. For example, the word 'cilium' occurred 2 times in books in 1682 and 3,193 times in 2008. From 1682 to 2008, the word 'cilium' was used a total of 114,832 times in books scanned by Google. See Reference: Google Ngram project.

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