Usage History of 'kernel'

The following chart shows how frequently 'kernel' appeared in printed materials over time. For example, the word 'kernel' occurred 2 times in books in 1520 and 224,647 times in 2008. From 1520 to 2008, the word 'kernel' was used a total of 3,903,368 times in books scanned by Google. See Reference: Google Ngram project.

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