There's quite a few long words in the English dictionary, but the urlLink longest word to date appears to be this chemical compound name for tryptophan synthetase A protein : methionylglutaminylarginyltyrosylglutamylserylleucylphenylalanylalanylglutaminyll eucyllysylglutamylarginyllysylglutamylglycylalanylphenylalanylvalylprolylphenylal anylvalylthreonylleucylglycylaspartylprolylglycylisoleucylglutamylglutaminylseryl leucyllysylisoleucylaspartylthreonylleucylisoleucylglutamylalanylglycylalanylaspa rtylalanylleucylglutamylleucylglycylisoleucylprolylphenylalanylserylaspartylproly lleucylalanylaspartylglycylprolylthreonylisoleucylglutaminylasparaginylalanylthre onylleucylarginylalanylphenylalanylalanylalanylglycylvalylthreonylprolylalanylglu taminylcysteinylphenylalanylglutamylmethionylleucylalanylleucylisoleucylarginylgl utaminyllysylhistidylprolylthreonylisoleucylprolylisoleucylglycylleucylleucylmeth ionyltyrosylalanylasparaginylleucylvalylphenylalanylasparaginyllysylglycylisoleuc ylaspartylglutamylphenylalanyltyrosylalanylglutaminylcysteinylglutamyllysylvalylg lycylvalylaspartylserylvalylleucylvalylalanylaspartylvalylprolylvalylglutaminylgl utamylserylalanylprolylphenylalanylarginylglutaminylalanylalanylleucylarginylhist idylasparaginylvalylalanylprolylisoleucylphenylalanylisoleucylcysteinylprolylprol ylaspartylalanylaspartylaspartylaspartylleucylleucylarginylglutaminylisoleucylala nylseryltyrosylglycylarginylglycyltyrosylthreonyltyrosylleucylleucylserylarginyla lanylglycylvalylthreonylglycylalanylglutamylasparaginylarginylalanylalanylleucylp rolylleucylasparaginylhistidylleucylvalylalanyllysylleucyllysylglutamyltyrosylasp araginylalanylalanylprolylprolylleucylglutaminylglycylphenylalanylglycylisoleucyl serylalanylprolylaspartylglutaminylvalyllysylalanylalanylisoleucylaspartylalanylg lycylalanylalanylglycylalanylisoleucylserylglycylserylalanylisoleucylvalyllysylis oleucylisoleucylglutamylglutaminylhistidylasparaginylisoleucylglutamylprolylgluta myllysylmethionylleucylalanylalanylleucyllysylvalylphenylalanylvalylglutaminylpro lylmethionyllysylalanylalanylthreonylarginylserine Now try saying that when you're drunk... or just, just try saying it now. Ugh... =/
