Usage History of 'intranasal'

The following chart shows how frequently 'intranasal' appeared in printed materials over time. For example, the word 'intranasal' occurred 2 times in books in 1864 and 9,139 times in 2008. From 1864 to 2008, the word 'intranasal' was used a total of 223,472 times in books scanned by Google. See Reference: Google Ngram project.

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