Usage History of 'semipermeable'

The following chart shows how frequently 'semipermeable' appeared in printed materials over time. For example, the word 'semipermeable' occurred 4 times in books in 1880 and 5,844 times in 2008. From 1880 to 2008, the word 'semipermeable' was used a total of 215,701 times in books scanned by Google. See Reference: Google Ngram project.

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