Question

The longest word in english language and its meaning

Answer 1

The longest word in any of the major English language dictionaries is   


pneumonoultramicroscopicsilicovolcanoconiosis , 


a word that refers to a lung disease contracted from the inhalation of very fine silica particles, specifically from a volcano

Answer 2

pneumonoultramicroscopicsilicovolcanoconiosis
is the longest word in english  and it is a lung disease