A lung disease caused by inhaling volcanic ash and/or dust. Can also be caused by inhaling very fine silica dust particles. Also, it is the longest English word to ever appear in a dictionary. It was first coined in 1931. The longest English word ever is the chemical name of titin ,the largest protein in the human body.
You won't have to use this word much, but if you have ever been near a volcano, and you start coughing like crazy, then you probably have pneumonoultramicroscopicsilicovolcanoconiosis.
by mkakapo February 14, 2014
Get the pneumonoultramicroscopicsilicovolcanoconiosismug. 
by Seen_potato_bean May 24, 2021
Get the pneumonoultramicroscopicsilicovolcanoconiosis is a wordmug. Pneumonoultramicroscopicsilicovolcanoconiosis & Supercalifragilisticexpialidocious are the longest words in the world! Let's forget titin
Oh my god! I love saying Pneumonoultramicroscopicsilicovolcanoconiosis & Supercalifragilisticexpialidocious
I'm getting real fast at typing that
I'm getting real fast at typing that
by BabbleBoy April 9, 2023
Get the Pneumonoultramicroscopicsilicovolcanoconiosis & Supercalifragilisticexpialidociousmug. Guy: stupid people who don't know how to spell pneumonoultramicroscopicsilicovolcanoconiosis
Guy 2: I'm not stupid because its the longest word in exsistence!
Guy: OK! But its true because the name of this "NEW WORD" is called that!
Guy 2: But it says you're not really stupid!
Guy: Oh yeah, I guess so... Hah?
Guy 2: I'm not stupid because its the longest word in exsistence!
Guy: OK! But its true because the name of this "NEW WORD" is called that!
Guy 2: But it says you're not really stupid!
Guy: Oh yeah, I guess so... Hah?
by SirenHeadPlayz12345 December 26, 2020
Get the stupid people who don't know how to spell pneumonoultramicroscopicsilicovolcanoconiosismug. Jeff : Hey Bob I think i have pneumonoultramicroscopicsilicovolcanoconiosis.
Bob : WHAT IN THE WORLD ARE YOU EVEN TALKING ABOUT JEFF!
Bob : WHAT IN THE WORLD ARE YOU EVEN TALKING ABOUT JEFF!
by very super epic jeff January 18, 2022
Get the pneumonoultramicroscopicsilicovolcanoconiosismug. Pneumonoultramicroscopicsilicovolcanoconiosis is a long word said to mean a lung disease caused by inhaling ash and sand dust.
*Doctor does X-RAY*
Doctor: "You have Pneumonoultramicroscopicsilicovolcanoconiosis
Patient: " oh no..."
Doctor: "You have Pneumonoultramicroscopicsilicovolcanoconiosis
Patient: " oh no..."
by Siblings_Fight July 4, 2023
Get the Pneumonoultramicroscopicsilicovolcanoconiosismug.