Pneumonoultramicroscopicsilicovolcanoconiosis (word)
Pneumonoultramicroscopicsilicovolcanoconiosis () is a word that was made up in 1935 by Everett M. Smith. She was the president of the National Puzzlers' League. Oxford Dictionaries says that t is the longest word in the English language. Oxford Dictionaries say that it means "an artificial long word said to mean a lung disease caused by inhaling very fine ash and sand dust".