Question

What is the LONGEST word in the dictionary

Answer 1

Pneumonoultramicroscopicsilicovolcanoconiosis: "A lung disease contracted from the inhalation of very fine silica particles, specifically from a volcano; medically, it is the same as silicosis."
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~{Dunsforhands}

Answer 2

The longest word in the dictionary is pneumonoultramicroscopicsilicovolcanoconiosis meaning 

a pneumoconiosis caused by inhalation of very fine silicate or quartz dust

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