which is the longest "word" in English?

@ysalwal (210)
India
September 4, 2006 1:43pm CST
iknow the answer...what about you?
1 response
• United States
14 Sep 06
Pneumonoultramicroscopicsilicovolcanoconiosis
• India
13 Nov 12
I think this is some kind of a disease.What does it actually mean?