Usage History of 'ammonia'

The following chart shows how frequently 'ammonia' appeared in printed materials over time. For example, the word 'ammonia' occurred 1 time in books in 1662 and 222,035 times in 2008. From 1662 to 2008, the word 'ammonia' was used a total of 8,008,607 times in books scanned by Google. See Reference: Google Ngram project.

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