Usage History of 'rational'

The following chart shows how frequently 'rational' appeared in printed materials over time. For example, the word 'rational' occurred 4 times in books in 1505 and 1,037,846 times in 2008. From 1505 to 2008, the word 'rational' was used a total of 27,601,184 times in books scanned by Google. See Reference: Google Ngram project.

See also:

Find all anagrams of 'rational'
Words starting with a,b,c...
Words ending with a,b,c...
Words starting & ending with a,b,c....