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pneumonoultramicroscopic silicavolcanoconiosis

A Disease Caused By The Inhalation Of Fine Graphite Or Silicate Particles. Longest Word In The English Language.
(Frank): Hey Jimmy, Do You Want To Come Out And Play?
(Jimmy): No Way Man, I'm Sick Again.
(Frank): With What? The Cold?
(Jimmy): Hell No! I've Got Pneumonoultramicroscopic silicavolcanoconiosis.
(Frank): Oh Shit!!
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pneumonoultramicroscopic silicavolcanoconiosis

British spelling of the longest word in the English language. Meaning is a disease of the lung caused by inhaling volcano dust. The American spelling ends in koniosis.

(Ignore the fact that the word is broken in two. That's because UD limits words in example fields to 40 characters.)
"Spot of tea?"

"Oh, quite! Just the thing to soothe my pneumonoultramicroscopic silicavolcanoconiosis!"

pneumonoultramicroscopic silicavolcanoconiosis

A lung disease commonly found from miners. A long word which many people know about, but its application is very very very limited.
Zomfg: Oh my goodness! My cousin, who's a miner, has acquired a-a... uhmmm... I forgot the word.It's like pneumo-something-ishconiosis.

WtfLma0: it's pneumonoultramicroscopic silicavolcanoconiosis

pneumonoultramicroscopicsilicovolcanoconiosis 

An inflammation of the lungs caused by microscopic grains of certain types of rock.

*NOTE* This word was actually coined in a deliberate attempt to be the longest word in the english language, although you would be hard-pressed to find it in the language dictionary as it is a medical/scientific term.
"Dude, now that I've learned how to spell antidisestablishmentarianism, what am I going to do to make people think I'm smart?"

"Quiet man, I'm trying to name this condition we discovered today. Its an inflammation of the lungs caused by microscopic grains of certain types of rock."

"Hey, I smell opportunity! How long could we make this word?"

"Pretty long...I suppose we could stretch it to pneumonoultramicroscopicsilicovolcanoconiosis"

pneumonoultramicroscopicsilicovolcanoconiosis 

A: What's the wifi password?
B: It's on the back of the router.
The router: pneumonoultramicroscopicsilicovolcanoconiosis

pneumonoultramicroscopicsilicovolcanoconiosis'd've'ly'yaint'nt'ed'ies's'y'es'nt'ed'ies's'y'es'nt't're'ing'able'ric'ive'al'nt'ne'm'll'ble'al 

the longest possible grammatically correct EVER.
man i really pneumonoultramicroscopicsilicovolcanoconiosis'd've'ly'yaint'nt'ed'ies's'y'es'nt'ed'ies's'y'es'nt't're'ing'able'ric'ive'al'nt'ne'm'll'ble'al ing hate this guy

pneumonoultramicroscopicsilicovolcanoconiosis 

1. A disease gotten from inhalation of diminative particles of silica or quartz.
Pneumono - Lung
Ultra Microscopic - Very small/fine
silico volcano - igneous, silica
coniosis - disease
; Black Lung
In the mid 1880's, miners would get pneumonoultramicroscopicsilicovolcanoconiosis.