Answer:
pneumonoultramicroscopicsilicovolcanoconiosis
Explanation:
Appearing in the Oxford English Dictionary, this 45-letter word for a disease is the longest English word that is defined in a major dictionary. It's a technical word referring to the lung disease more commonly known as silicosis.
Pneumonoultramicroscopicsilicovolcanoconiosis
- is the longest word in English Literature consisting of 45 letters.
- it is a lung disease derived from inhaling ash and debris.
