Usage History of 'positronium'

The following chart shows how frequently 'positronium' appeared in printed materials over time. For example, the word 'positronium' occurred 20 times in books in 1892 and 1,148 times in 2008. From 1892 to 2008, the word 'positronium' was used a total of 72,923 times in books scanned by Google. See Reference: Google Ngram project.

See also:

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