Usage History of 'alter'

The following chart shows how frequently 'alter' appeared in printed materials over time. For example, the word 'alter' occurred 8 times in books in 1507 and 617,806 times in 2008. From 1507 to 2008, the word 'alter' was used a total of 16,233,677 times in books scanned by Google. See Reference: Google Ngram project.

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