Longest Words (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

i serously think that facioscapulohumeral is the longest word it has 19 letter and its a type of muscular dysrophy

Well th massive word was words repeated, if you look closley it says the same things over and over again. My longest word would be, amalaganation which means ' a mixture of things' or Lacadaisical which means, someone who shows a lack of

hi!! i dont know whether this is THE longest word but this is not a word that you might come across in your subjects. FLOCCIPAUCINIHILIPILIFICATION : noun: the action or habit of estimating something as worthless . cheers

SUPER­CALI­FRAGI­LISTIC­EXPI­ALI­DOCOUS one of the longest words too ??

ACETYLSERYLTYROSYLSERYLISOLEUCYL- THREONYLSERYLPROLYLSERYLGLUTAMINYL- PHENYLALANYLVALYLPHENYLALANYLLEUCYL- SERYLSERYLVALYLTRYPTOPHYLALANYL- ASPARTYLPROLYLISOLEUCYLGLUTAMYLLEUCYL- LEUCYLASPARAGINYLVALYLCYSTEINYL- THREONYLSERYLSERYLLEUCYLGLYCYL-

The LONGEST word in the English dictionary is- pneumonoultramicroscopicsilicovolcanoconiosis and it is pronounced- new-monno-ultra-my-crow-scopic-silico-volcano-con-ee-osis I know this is a word because it was included in my school spelling bee.

yo FLOCCI­NAUCINI­HILIPIL­IFICATION is not the long word in the world because methylenedioxymethamphetamine is the same amount.

The longest word in English (or Chemistry, though it is in English actually) is Methionylthreonylthreonyl...isoleucine which consists of 189,819 letters. Amazing, huh? I'm damn sure no dictionary known has listed it as of yet.

there's aa word that is 3.6million letters wittten by an author it takes up 812 pages and means"current date beween real and imagineable today" makes no sense to me.