gakoauauotamateapokaiwhenuakitanatahu is the Māori name for a hill, 305 metres high, close to Porangahau, south of Waipukurau in southern Hawke's Bay, New Zealand.

I IMed a buddy and he replied with 28 letter Antidisestablishmentarianism. So I looked it up to remind me of the definition.

Which led me to 45 letter
Pneumonoultramicroscopicsilicovolcanoconiosis
http://en.wikipedia.org/wiki/Pneumonoultramicroscopicsilicovolcanoconiosis


Which led me to 85 letter
Taumatawhakatangihangakoauauotamateapokaiwhenuakitanatahu
http://en.wikipedia.org/wiki/Taumatawhakatangihangakoauauotamateapokaiwhenuakitanatahu

dude u have wayyyyyy too much time on ur hands...lol

x2

I'll top those... with...

Methionylglutaminylarginytyrosylglutamylserylleucylphenylalanylalanylglutaminylleucyllysylglutamylarginyllysylglutamylglycylalanylphenylalanyvalylprolylphenylalanylvalythreonylleuc ylglycylaspartylprolyglycylisoleucylglutamylglutaminylserylleucyllysylisoleucylaspartylthreonylleucylisoleucylglutamylalanylglycylalanylaspartylalanylleucylglutamylleucylglycylglyc ylisoleucylprolylphenylalanylserylaspartylprolylleucelalanylaspartyglycylprolythreonylisoleucylglutamiylasparaginylalanylthreonylleucylarginylalanylphenylalanylalanylglycylvalylthe onylprolylalanylglutaminylcysteinylphenylalanygllutamylmethionylleucyalanylleucylisoleucylarginylglutaminyllysylhistidylprolylthreonylisoleucylpriIylisoleucylglycylleucylleucylmeth ionyltyrosylalanylasparaginylleucylvalyphenylalanylasparaginyllysylgyycylisoleucylaspartylglutamylphenylalanyltyrosylalanylgutaminyllcysteinylglutamyllysylvalylglycylavlylaspartyls erylvalylleucylvalylalanylaspartylvalyprolylvalylglutaminylglutamyllserylalanyprolyphenylalanylarginylglutaminylalanylalanylleucylarginylhistidylasparaginylvaylalanylprolylisoleucy lphenylalanylisoleucylcysteinylprolylprolylaspartylalanylaspartylaspartylaspartylleucylleucylarginyglutaminylisoleucylalanyylseryltyrosylglycylarginylglycyltyrosylthreonyltyrosylle ucylleucylserylarginylalanylglycylvalythreonylglycylalanylglutamylasparaginylarginylanylalanylleucylprolylleucylaspaaginylhistidylleucylvaylalanyllysylleucyllysylglutamyltyrosylasa raginylglycylphenylalanylglycylisoleucylalanylprolylaspartylglutaminylvalyllysylalanylalanylisoleucylaspartylalanylalanyglycylalanylalanyglycylalanylisoleucylserylglycyserylalanyli soleucylbalyllsylisoleucylisoleucylglutamyyylglutaminylhistidylasparaginylisoleucylglutamylprolyglutamyllysylmethionylleucylalanylalanylleucyllysylvalylphenylalabylvalylglutaminlyl prolylmethionyllysylalanylalanylthreonylarginylserine

....I hope I spelt that correctly, it's been a long time since I last used that word! Ha Ha

There's one that is claimed to have 207,000 letters, but has never been printed in full. LOL!

Here: http://www.tgmag.ca/tgo.v2e7/v2e7.7x_e.html