the longest word.

hey blog. i just found out the longest english word without proper nouns, names etc. i found it at yahoo.great right.

this is the word :
"Pneumonoultramicroscopicsilicovolcanocon... "

it say's that it is according to the Oxford English Dictionary, "a word alleged to mean 'a lung disease caused by the inhalation of volcanic ash, causing inflammation in the lungs.'"

It occurs chiefly as an instance of a very long word.[1] The 45-letter word was coined to serve as the longest English word and is the longest word ever to appear in an English language dictionary. It is listed in the current edition of several dictionaries.[


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This is the chemical name of the largest known protein. It is an astonishing 189,819 letters long. However it is purely a technical term and though written in English it isn't a "dictionary" term and thus the first answerer is the most correct.

Methionylthreonylthreonylglutaminylala...
ylglutaminylprolylleucylglutaminylsery...
lserylthreonylalanylthreonylphenylalan...
rylglycylphenylalanylprolylvalylprolyl...
lanylarginylaspartylglycylglutaminylva...
nylleucylprolylglycylvalylglutaminylis...
ylglycylarginylalanyllysylleucylthreon...
llysylalanylasparaginylserylglycylargi...
eonylasparaginylglycylserylglycylgluta...
nylglutamylleucylleucylvalyllysylalany...
asparaginylphenylalanylvalylglutaminyl...
ylthreonylvalylarginylglutaminylglycyl...
utaminylvalylarginylvalylthreonylglycy...
lylvalyllysylphenylalanyltyrosylarginy...
cylglutaminylserylserylleucylaspartylp...
glutaminylglutamylglycylaspartylleucyl...
anylglutamylalanyltyrosylprolylglutamy...
serylvalylasparaginylalanylthreonylasp...
ylthreonylserylthreonylalanylglutamyll...
tamylglutamylglutamylvalylprolylalanyl...
eucylvalylserylthreonylalanylglutaminy...
glutaminylthreonylarginylisoleucylglut...
ylhistidylphenylalanylaspartylalanylar...
lylglutamylmethionylvalylisoleucylaspa...
nylglutaminylleucylprolylhistidyllysyl...
lprolylprolyllysylprolyllysylserylargi...
erylisoleucylalanylalanyllysylalanylgl...
ylglutaminylserylprolylserylprolylisol...
lprolylvalylarginylhistidylvalylarginy...
lylvalylarginylserylvalylserylprolylal...
onylserylprolylisoleucylarginylserylva...
thionylarginyllysylthreonylglutaminyla...
ylglycylprolylglutamylvalylprolylproly...
tamylglycyltyrosylvalylalanylserylsery...
ylarginylglutamylthreonylthreonylleucy...
minylisoleucylarginylthreonylglutamylg...
cylarginyltyrosylglycylvalylglutaminyl...
eucylserylglycylalanylalanylglycylalan...
serylalanylseryltyrosylalanylalanylglu...
lalanyllysylglutamylvalyllysylglutamin...
lanylalanylvalylalanylthreonylvalylval...
lalanylarginylvalylarginylglutamylprol...
tamylglutaminylthreonylalanylglutaminy...
eonylalanylvalylhistidylisoleucylgluta...
glutaminylvalylarginyllysylglutamylala...
threonyllysylvalylvalylvalylalanylalan...
lutaminylglutamylleucyllysylserylargin...
leucylthreonylthreonyllysylglutaminylg...
alylthreonylhistidylglutamylglutaminyl...
ylglutamyllysylthreonylphenylalanylval...
ylalanylalanyllysylalanyllysylglutamyl...
oleucylserylglutamylglutamylisoleucylt...
taminylvalylthreonylglutaminylglutamyl...
ylthreonylarginyllysylthreonylvalylval...
nylthreonylprolyllysylvalyllysylglutam...
larginylglycylarginylglutamylglycyliso...
lutamylglutaminylvalylglutaminylisoleu...
ethionylarginyllysylglutamylalanylglut...
hreonylisoleucylalanylvalylalanylthreo...
utaminylglutamylthreonylisoleucylleucy...
onylmethionylalanylthreonylarginylglut...
utaminylvalylthreonylhistidylglycyllys...
lalanylglutamylalanylvalylalanylthreon...

believe it or not.
its up to you.