What's the longest word in the u. s. dictionary?
The longest word in any of the major English language dictionaries is pneumonoultramicroscopicsilicovolcanoconiosis, a word that refers to a lung disease contracted from the inhalation of very fine silica particles, specifically from a volcano; medically, it is the same as silicosis.
The longest word in any of the major English language dictionaries is pneumonoultramicroscopicsilicovolcanoconiosis.
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