Usage History of 'impingement'

The following chart shows how frequently 'impingement' appeared in printed materials over time. For example, the word 'impingement' occurred 8 times in books in 1801 and 24,491 times in 2008. From 1801 to 2008, the word 'impingement' was used a total of 520,474 times in books scanned by Google. See Reference: Google Ngram project.

See also:

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