LOOOOOOONGEST Word

Do you know the two longest words? I bet you don’t! That’s why I’m going to tell you.
The longest word in the Dictionary is:
Pneumonoultramicroscopicsilicovolcanocon…
It is “a word alleged to mean ‘a lung disease caused by the inhalation of volcanic ash, causing inflammation in the lungs.’” -Oxford English Dictionary.
The Longest word that is NOT in the [...]