Ok guys, bet this. This is a real word. This is the longest word in the eglish Language.

This 1,185-letter 'word' is the chemical name for "Tobacco Mosaic Virus, Dahlemense Stain." It is supposedly the longest word in the English language.

The term was published in the American Chemical Society's Chemical Abstracts in 1972, and is considered by some to be the longest real word. It does hold the record for the longest word in an English language publication in a serious context, that is, for some reason other than to publish a very long word.

In its complete form, the word is:


acetylseryltyrosylserylisoleucylthreonylserylprolylserylglutaminyl-
phenylalanylvalylphenylalanylleucylserylserylvalyltryptophylalanyl-
aspartylprolylisoleucylglutamylleucylleucylasparaginylvalylcysteinyl-
threonylserylserylleucylglycylasparaginylglutaminylphenylalanyl-
glutaminylthreonylglutaminylglutaminylalanylarginylthreonylthreonyl-
glutaminylvalylglutaminylglutaminylphenylalanylserylglutaminylvalyl-
tryptophyllysylprolylphenylalanylprolylglutaminylserylthreonylvalyl-
arginylphenylalanylprolylglycylaspartylvalyltyrosyllysylvalyltyrosyl-
arginyltyrosylasparaginylalanylvalylleucylaspartylprolylleucylisoleucyl-
threonylalanylleucylleucylglycylthreonylphenylalanylaspartylthreonyl-
arginylasparaginylarginylisoleucylisoleucylglutamylvalylglutamyl-
asparaginylglutaminylglutaminylserylprolylthreonylthreonylalanylglutamyl-
threonylleucylaspartylalanylthreonylarginylarginylvalylaspartylaspartyl-
alanylthreonylvalylalanylisoleucylarginylserylalanylasparaginylisoleucyl-
asparaginylleucylvalylasparaginylglutamylleucylvalylarginylglycyl-
threonylglycylleucyltyrosylasparaginylglutaminylasparaginylthreonyl-
phenylalanylglutamylserylmethionylserylglycylleucylvalyltryptophyl-
threonylserylalanylprolylalanylserine

The letter combination yl appears in the word 166 times.

Ok, this is to set all records (that I know of) straight

-------------Longest Chemical Word-------------------------
methionylglutaminylarginyltyrosylglutamylserylleucylphenylalanylalanyl- glutaminylleucyllysylglutamylarginyllysylglutamylglycylalanylphenylalanyl- valylprolylphenylalanylvalylthreonylleucylglycylaspartylprolylglycyl- isoleucylglutamylglutaminylserylleucyllysylisoleucylaspartylthreonylleucyl- isoleucylglutamylalanylglycylalanylaspartylalanylleucylglutamylleucyl- glycylisoleucylprolylphenylalanylserylaspartylprolylleucylalanylaspartyl- glycylprolylthreonylisoleucylglutaminylasparaginylalanylthreonylleucyl- arginylalanylphenylalanylalanylalanylglycylvalylthreonylprolylalanyl- glutaminylcysteinylphenylalanylglutamylmethionylleucylalanylleucyl- isoleucylarginylglutaminyllysylhistidylprolylthreonylisoleucylprolyl- isoleucylglycylleucylleucylmethionyltyrosylalanylasparaginylleucylvalyl- phenylalanylasparaginyllysylglycylisoleucylaspartylglutamylphenylalanyl- tyrosylalanylglutaminylcysteinylglutamyllysylvalylglycylvalylaspartylseryl- valylleucylvalylalanylaspartylvalylprolylvalylglutaminylglutamylseryl- alanylprolylphenylalanylarginylglutaminylalanylalanylleucylarginylhistidyl- asparaginylvalylalanylprolylisoleucylphenylalanylisoleucylcysteinylprolyl- prolylaspartylalanylaspartylaspartylaspartylleucylleucylarginylglutaminyl- isoleucylalanylseryltyrosylglycylarginylglycyltyrosylthreonyltyrosylleucyl- leucylserylarginylalanylglycylvalylthreonylglycylalanylglutamylasparaginyl- arginylalanylalanylleucylprolylleucylasparaginylhistidylleucylvalylalanyl- lysylleucyllysylglutamyltyrosylasparaginylalanylalanylprolylprolylleucyl- glutaminylglycylphenylalanylglycylisoleucylserylalanylprolylaspartyl- glutaminylvalyllysylalanylalanylisoleucylaspartylalanylglycylalanylalanyl- glycylalanylisoleucylserylglycylserylalanylisoleucylvalyllysylisoleucyl- isoleucylglutamylglutaminylhistidylasparaginylisoleucylglutamylprolyl- glutamyllysylmethionylleucylalanylalanylleucyllysylvalylphenylalanylvalyl- glutaminylprolylmethionyllysylalanylalanylthreonylarginylserine

Scientific name for tryptophan synthetase, which is made up of 267 amino acids. It has appeared written down a number of times and has 1,909 letters. Chemical word for C1289H2051N343O375S8

-------------------Longest Word Found In Dictionary-----------------------
PNEUMONO­ULTRA­MICRO­SCOPIC­SILICO­VOLCANO­CONIOSIS

a lung disease caused by breathing in particles of siliceous volcanic dust. Has 45 letters

------------------Longest Place Name----------------------------
TAUMATA­WHAKA­TANGI­HANGA­KOAUAU­O­TAMATEA­TURIPUKAKA­PIKI­MAUNGA­HORO­NUKU­POKAI­WHENUA­KITANA­TAHU

A hill in New Zealand. This Maori name was in general use, but is now generally abbreviated to Taumata. Has 85 Letters.

------------------Longest Internet Domain Name----------------
www.llanfairpwllgwyngyllgogerychwyrndrobwyll-llantysiliogogogoch.com

Not really a word but I thought it might be interesting to some people out there.