Usage History of 'ephemerides'

The following chart shows how frequently 'ephemerides' appeared in printed materials over time. For example, the word 'ephemerides' occurred 1 time in books in 1638 and 3,726 times in 2008. From 1638 to 2008, the word 'ephemerides' was used a total of 132,667 times in books scanned by Google. See Reference: Google Ngram project.

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