What is the longest word in the English language?
What is the longest word in the English language? The longest English word is pneumonoultramicroscopicsilicovolcanoconiosis, which is forty-five letters long and refers to a type of lung disease. If you're including technical words, the longest English word— and longest word in the world—is this word, a chemical name for a protein that is 189,819 letters long.
No records found.