what is the longest word in the english language?
Pneumonoultramicroscopicsilicovolcanoconiosis is longest word in English to appear in a major dictionary. Note that there are technical words with 100,000+ letters, that doesn't appear in the dictionary.
It depends on how you define a word. Wikipedia has a good article about it:
http://en.wikipedia.org/wiki/Longest_word_in_English
Personally I think the winner must be Floccinaucinihilipilification, which means, um... er...
Rivid is right with pneumonoultramicroscopicsilicovolcanoconiosis at 45 letters. I found a similar discussion on the english forums: Longest word in the English language which is quite long with 33 pages of answers, so I'm not sure if there is a definite answer to this hehe.
How about "supercalifragilisticexialidocious"?
Other people asked questions on similar topics, check out the answers they received:
Other people asked questions on various topics, and are still waiting for answer. Would be great if you can take a sec and answer them