The following is a real word--probably the longest in our language.                       It is the technical name for "Tobacco Mosaic Virus, Dahlemense Strain." It has 1,185 letters. Now you know.

Acetylseryltyrosylserylisoleucylthreonylseryl-prolylserylglutaminylphenylalanylvalylphenyl-
alanylleucylserylserylvalyltryptophylalanylaspartyl- prolylisoleucylglutamylleucylleucylasparaginyl-
valylcysteinylthreonylserylserylleucylglycylas- paraginylglutaminylphenylalanylglutaminylthreonyl-
glutaminylglutaminylalanylarginylthreonylthreonyl- glutaminylvalylglutaminylglutaminyl-
phenylalanylserylglutaminylvalyltryptophyllysylprolyl- phenylalanylprolylglutaminylserylthreonylvalyl-
arginylphenylalanylprolylglycylaspartylvalyltyrosyllysyl- valyltyrosylarginyltyrosylasparaginylalanyl-
valylleucylaspartylprolylleucylisoleucylthreony- lalanylleucylleucylglycylthreonylphenylalanylaspartyl-
threonylarginylasparaginylarginylisoleucylisoleucyl- glutamylvalglutamylasparaginylglutaminyl-
glutaminylserylprolylthreonylthreonylalanylglutamyl- threonylleucylaspartylalanylthreonyl-
arginylarginylvalylaspartylaspartylalanylthreonylvaly-lalanylisoleucylarginylserylalanyl-
asparaginylisoleucylasparaginylleucylvalylasparaginyl- glutamylleucylvalylarginylglycyl-
threonylglycylleucyltyrosylasparaginylglutaminylasparaginyl- threonylphenylalanylglutamyl-
serylmethionylserylglycylleucylvalyltryptophylthreonylsery- lalanylprolylalanylserine.