How many words are possible using the 26 letters of the Roman alphabet? I've made some speculative calculations and I believe provide a preliminary answer to this question. Since languages other than English make use of the Roman alphabet, and probably more Romanization will occur in the future, my numerical estimates include their usage. But I will focus on English, and assume that English alone may look to the entire pool of possible words as needed for future expansion.
"Room For Expansion,"
Word Ways: Vol. 33
, Article 7.
Available at: http://digitalcommons.butler.edu/wordways/vol33/iss2/7