what is the biggest word in the world?

pneumonoultramicroscopicsilica...

The longest word to appear in standard English dictionaries is pneumonoultramicroscopicsilicovolcanokoniosis. This is the name of a lung disease suffered by miners. It first appeared in Webster's New International Dictionary and then alter in the second edition of the Oxford English Dictionary.

methionylglutaminylarginyltyrosylglutamylserylleucylphenylalanylalan ylglutaminylleucyllysylglutamylarginyllysylglutamylglycylalanylpheny lalanylvalylprolylphenylalanylyalylthreonylleucylglycylaspartylproly lglycylisoleucylglutamylglutaminylserylleucyllysylisoleucylaspartylt hreonylleucylisoleucylglutamylalanylglycylalanylaspartylalanylleucyl glutamylleucylglycylisoleucylprolylphenylalanylserylaspartylprolylle ucylalanylaspartylglycylprolylthreonylisoleucylglutaminylasparaginyl alanylthreonylleucylarginylalanylphenylalanylalanylalanylglycylvalyl threonylprolylalanylglutaminylcysteinylphenylalanylglutamylmethionyl leucyalanylleucylisoleucylarginylglutaminyllysylhistidylprolylthreon ylisoleucylprolylisoleucylglycylleucylleucylmethionyltyrosylalanylas paraginylleucylvalylphenylalanylasparaginyllysylglycylisoleucylaspar tylglutamylphenylalanyltyrosylalanylglutaminylcysteinylglutamyllysyl valylglycylvalylaspartylserylvalylleucylvalylalanylaspartylvalylprol ylvalylglutaminylglutamylserylalanylprolylphenylalanylarginylglutami nylalanylalanylleucylarginylhistidylasparaginylvalylalanylprolylisol eucylphenylalanylisoleucylcysteinylprolylprolylaspartylalanylasparty laspartylaspartylleucylleucylarginylglutaminylisoleucylalanylserylty rosylglycylarginylglycyltyrosylthreonyltyrosylleucylleucylserylargin ylalanylglycylvalylthreonylglycylalanylglutamylasparaginylarginylala nylalanylleucylprolylleucylasparaginylhistidylleucylvalylalanyllysyl leucyllysylglutamyltyrosylasparaginylalanylalanylprolylprolylleucylg lutaminylglycylphenylalanylglycylisoleucylserylalanylprolylaspartylg lutaminylvalyllysylalanylalanylisoleucylaspartylalanylglycylalanylal anylglycylalanylisoleucylserylglycylserylalanylisoleucylvalyllysylis oleucylisoleucylglutamylglutaminylhistidylasparaginylisoleucylglutam ylprolylglutamyllysylmethionylleucylalanylalanylleucyllysylvalylphen ylalanylvalylglutaminylprolylmethionyllysylalanylalanylthreonylargin ylserine

- 1,913 (chem. in Mrs Byrne's Dict. See appendix 2)

I know, crazy right...I can't pronounce these words...lol

Taumatawhakatang ihangakoauauotamatea pokaiwhenuakitanatahu (i extra areas so the whole observe shows up) it is the M?ori call for a hill, 305 metres (a million,001 feet) intense, close to to Porangahau, south of Waipukurau in southern Hawke's Bay, New Zealand.

If integers can be counted as mathematical words, then I don't even have room to put a correct answer here. Look up the Busy Beaver Sequence.

Smiles

There is a mile between the two S's

pneumonoultramicroscopicsilicovolcanoconoasis - some sort of a lung disease

supercalifragilisticexpialidocious