Usage History of 'polycythemia'

The following chart shows how frequently 'polycythemia' appeared in printed materials over time. For example, the word 'polycythemia' occurred 4 times in books in 1858 and 6,959 times in 2008. From 1858 to 2008, the word 'polycythemia' was used a total of 347,155 times in books scanned by Google. See Reference: Google Ngram project.

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