The Oxford Dictionary of the English Language, and Webster's Dictionary both recognize the word, but the chances of you seeing this word as it is in their Compact Edtions is slim to none, due to the sheer size of the word.

And let me break the word down for you. It is also the key to spelling the darn word as well as reading it.


pneu-mono-ultra-microscopic-silico-volcano-coniosis


There. I have broken the word down for you that way you can read it.