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1.
supposedly the longest word in a dictionary, an artificial word said to mean a lung disease caused by the inhalation of silica dust.
Man i have to go to the doctors i think i have pneumonoultramicroscopicsilicovolcanokoniosis from the mine shaft we were in.
by Ja (jay w/o the y) July 11, 2005
77 26
 
2.
Pneumonoultramicroscopicsilicovolcanokoniosis
also spelt with a "c" replacing the "k"

long ass word

a lung desease from inhaling silica dust
dude did you hear about dylan he got Pneumonoultramicroscopicsilicovolcanokoniosis

no way man!!
by miss_jenna_13 April 06, 2009
8 3
 
3.
It is a respiratory disease where you breath in volcanic dust or other fine silicon dust. Also a really long word you can say to impress your friends, and make you seem smart.
Pranda got pneumono ultramicroscopicsilicovolcanokoniosis after he climbed into an active volcan and took a deep breath.
by Vossy May 26, 2006
24 22