Usage History of 'calorific'

The following chart shows how frequently 'calorific' appeared in printed materials over time. For example, the word 'calorific' occurred 10 times in books in 1725 and 13,936 times in 2008. From 1725 to 2008, the word 'calorific' was used a total of 499,535 times in books scanned by Google. See Reference: Google Ngram project.

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