what is the longest english word?

antidisestablishmentarianism although lots of chemical related words are much longer.

Hippopotomonstrosesquippeddaliophobia

45) PNEUMONO­ULTRA­MICRO­SCOPIC­SILICO­VOLCANO­CONIOSIS (also spelled PNEUMONO­ULTRA­MICRO­SCOPIC­SILICO­VOLCANO­KONIOSIS) = a lung disease caused by breathing in particles of siliceous volcanic dust.

This is the longest word in any English dictionary.

there is a chemical that has 1,185 letters but many people claim it is never used so it doesn’t count.

acetylseryltyrosylserylisoleucylthreonylserylprolylserylglutaminyl-

phenylalanylvalylphenylalanylleucylserylserylvalyltryptophylalanyl-

aspartylprolylisoleucylglutamylleucylleucylasparaginylvalylcysteinyl-

threonylserylserylleucylglycylasparaginylglutaminylphenylalanyl-

glutaminylthreonylglutaminylglutaminylalanylarginylthreonylthreonyl-

glutaminylvalylglutaminylglutaminylphenylalanylserylglutaminylvalyl-

tryptophyllysylprolylphenylalanylprolylglutaminylserylthreonylvalyl-

arginylphenylalanylprolylglycylaspartylvalyltyrosyllysylvalyltyrosyl-

arginyltyrosylasparaginylalanylvalylleucylaspartylprolylleucylisoleucyl-

threonylalanylleucylleucylglycylthreonylphenylalanylaspartylthreonyl-

arginylasparaginylarginylisoleucylisoleucylglutamylvalylglutamyl-

asparaginylglutaminylglutaminylserylprolylthreonylthreonylalanylglutamyl-

threonylleucylaspartylalanylthreonylarginylarginylvalylaspartylaspartyl-

alanylthreonylvalylalanylisoleucylarginylserylalanylasparaginylisoleucyl-

asparaginylleucylvalylasparaginylglutamylleucylvalylarginylglycyl-

threonylglycylleucyltyrosylasparaginylglutaminylasparaginylthreonyl-

phenylalanylglutamylserylmethionylserylglycylleucylvalyltryptophyl-

threonylserylalanylprolylalanylserine

1185 words

A place in Newzeland . i don’t know the name

Tyrannosaurus (as in Tyrannosaurus Rex)

It’s antidisestablishmentarianism, if you don’t count scientific or medical terms.

aswedscedegkjkjrelfmrgrgwerwerbghtytyhuiioililujhgjuiiuillnnnbuiukuikjlporeffjhelwqwdfdggteljkfjfefethyjjkjk

of course no one knows its meaning

aequeosalinocalcalinoceraceoaluminosocupreovitriolic

, just don’t ask me what it means

nooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo!!!!!!!!