Longest English word

The longest word in English is "Pneumonoultramicroscopicsilicovolcanoconiosis", with 45 letters, which is a lung disease caused by the inhalation of very fine silica dust found in volcanoes. The disease has a shorter name, and it appears that the long name was coined with the intention to be the longest word.

According to Oxford's English Dictionary, the longest word is "Pseudopseudohypoparathyroidism", with 30 letter, which means an inherited disorder that closely simulates the symptoms, but not the consequences of pseudohypoparathyroidism.

For more, check this article.

that was fun

i found words with over 1000 letters (science and crap) but i also found

this one:

Ornicopytheobiblopsychocrystarroscioaerogenethliometeoroaustrohier-

oanthropoicichthyopyrosiderochpnomyoalectryoophiobotanopegohy-

drorhabdocrithoaleuroalphitohalomolybdoclerobeloaxinocoscinodactyl-

iogeolithopessopscphocatoptrotephraoeirochiroomychodactyloarithst-

ichooxogeloscogastrogyrocerobletonooenoscapulinaniac-

"A deluded human who practices divination or forecasting" (310 letters)

You will find the following word in a book on English history:

Antidisestablishmentarianism

This was a movement in England to fight against the disestablishment of the Anglican Church.

smiles

there is a mile between the first and last letter

antidisestablishmentarialism