Usage History of 'subgrade'

The following chart shows how frequently 'subgrade' appeared in printed materials over time. For example, the word 'subgrade' occurred 2 times in books in 1855 and 9,716 times in 2008. From 1855 to 2008, the word 'subgrade' was used a total of 272,139 times in books scanned by Google. See Reference: Google Ngram project.

See also:

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