Usage History of 'outbreeding'

The following chart shows how frequently 'outbreeding' appeared in printed materials over time. For example, the word 'outbreeding' occurred 4 times in books in 1878 and 1,915 times in 2008. From 1878 to 2008, the word 'outbreeding' was used a total of 71,774 times in books scanned by Google. See Reference: Google Ngram project.

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