What is the 45 letter word pneumonoultramicroscopicsilicovolcanoconiosis?

What is the 45 letter word pneumonoultramicroscopicsilicovolcanoconiosis?

Approved answer

The Longest Word in English

The term pneumonoultramicroscopicsilicovolcanoconiosis is recognized as the longest word in major English dictionaries, containing 45 letters. This term describes a lung condition that arises from the inhalation of extremely fine silica dust, particularly from volcanic sources. In medical terminology, it is synonymous with silicosis.

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