Top definition
Pneumonoultramicroscopicilicolvocanoniosis is a lung disease caused by breathing in fine ash or sand dust after the eruption of a volcano. It is a medical term and is the longest pronouncable word in the dictionary. It contains 45 letters and very difficult to pronounce.
Guy 1 : "Dude, the volcano near the island we use to live on erupted, now my aunt has pneumonoultramicroscopicilicolvocanoniosis!"
Guy 2 : "To bad dude..... And, what was that word? Pneumonoultra-what?
Get the mug
Get a Pneumonoultramicroscopicilicolvocanoniosis mug for your buddy Georges.