Usage History of 'hydroponic'

The following chart shows how frequently 'hydroponic' appeared in printed materials over time. For example, the word 'hydroponic' occurred 2 times in books in 1928 and 3,800 times in 2008. From 1928 to 2008, the word 'hydroponic' was used a total of 82,272 times in books scanned by Google. See Reference: Google Ngram project.

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