Usage History of 'permeability'

The following chart shows how frequently 'permeability' appeared in printed materials over time. For example, the word 'permeability' occurred 2 times in books in 1696 and 136,273 times in 2008. From 1696 to 2008, the word 'permeability' was used a total of 4,929,358 times in books scanned by Google. See Reference: Google Ngram project.

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