Top Definition
either ive spelt this wrong or it is...

1. The longest word in the english oxford dictionary.
2. A lung disease in which microscopic silicon parts are inhaled and infect the lungs causing them to become inflamed (or however you spell it)
Dave: Hey Jeff you coming to work today?
Jeff: i cant dude ive got pneumonoultramicrosilicovolcanoconiosis
Dave: a what now?
by Ragnarock January 17, 2009
4 Words related to pneumonoultramicrosilicovolcanoconiosis

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