Usage History of 'digammas'

The following chart shows how frequently 'digammas' appeared in printed materials over time. For example, the word 'digammas' occurred 4 times in books in 1751 and 11 times in 2007. From 1751 to 2007, the word 'digammas' was used a total of 341 times in books scanned by Google. See Reference: Google Ngram project.

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