What is the longest word in english pronunciation?

Hi there

The longest word in any of the major English language dictionaries is pneumonoultramicroscopicsilicovolcanoconiosis (45 letters). It is a word that refers to a lung disease which is contracted from the inhalation of very fine silica particles, specifically from a volcano; medically, it is the same as silicosis.

If we had to write it down how we would say it, then it would look as follows: nyoo-muh-noh-uhl-truh-mahy-kruh-skop-ik-sil-i-koh-vol-key-noh-koh-nee-oh-sis. (Broken down into each word is as follows; pneumono ultra microscopic silica volcano konosus.)

I hope this helps you, and we look forward to answering any further questions you may have.