Usage History of 'helicopt'

The following chart shows how frequently 'helicopt' appeared in printed materials over time. For example, the word 'helicopt' occurred 7 times in books in 1909 and 9 times in 2007. From 1909 to 2007, the word 'helicopt' was used a total of 146 times in books scanned by Google. See Reference: Google Ngram project.

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