Usage History of 'audiometer'

The following chart shows how frequently 'audiometer' appeared in printed materials over time. For example, the word 'audiometer' occurred 2 times in books in 1820 and 1,709 times in 2008. From 1820 to 2008, the word 'audiometer' was used a total of 119,771 times in books scanned by Google. See Reference: Google Ngram project.

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