Usage History of 'protract'

The following chart shows how frequently 'protract' appeared in printed materials over time. For example, the word 'protract' occurred 2 times in books in 1563 and 6,565 times in 2008. From 1563 to 2008, the word 'protract' was used a total of 161,645 times in books scanned by Google. See Reference: Google Ngram project.

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