Pneumonoultramicroscopicsilicovolcanoconiosis

The longest English word: Pneumonoultramicroscopicsilicovolcanoconiosis

Pneumonoultramicroscopicsilicovolcanoconiosis is deliberately coined to be the longest English word. This word was invented in 1935 by Everett M. Smith, president of the National Puzzlers’ League, at its annual meeting. The word figured in the headline for an article published by the New York Herald Tribune on February 23, 1935 titled “Puzzlers Open 103d Session Here by Recognizing 45-Letter Word”.

Pneumonoultramicroscopicsilicovolcanoconiosis is included in the current edition of several English dictionaries and according to the Oxford English Dictionary it means; “a factitious word alleged to mean ‘a lung disease caused by the inhalation of very fine silica dust, causing inflammation in the lungs.’” A condition meeting the word’s definition is normally called silicosis.
Pneumonoultramicroscopicsilicovolcanoconiosis is 45 letters long.
To put that in perspective: the longest town name in the world is 163 characters long

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