The longest English word

According to the Oxford English Dictionary, the longest word in the English language is the Pneumonoultramicroscopicsilicovolcanocon which is a word “alleged to mean an inflammation of the lungs caused by the inhalation of volcanic ash”. The word is made up of 40 characters. My MS Word spellchecker has not even recognized yet the word.

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But what if I say “My friend seems to be suffering from a Pneumonoultramicroscopicsilicovolcanoconish kind of disease after visiting the volcanoes of Hawaii”? Have I invented the longest word in the English language then?

Below is the incomplete chemical name of the largest known protein. The astounding 189,819-letter word is too long that the page of this blog is not enough to contain it. It is nevertheless an entirely technical term and although written in English the word is not found in any dictionary unabridged or otherwise.

Methionylthreonylthreonylglutaminylalaylglutaminylprolylleucylglutamin ylserylserylthreonylalanylthreonylphenylalanrylglycylphenyl alanylprolylvalylprolyllanylarginylaspartylglycylglutaminyl vanylleucylprolylglycylvalylglutaminylisylglycylarginylalanyl lysylleucylthreonllysylalanylasparaginylserylglycylargieonyl asparaginylglycylserylglycylglutanylglutamylleucylleucyl valyllysylalanyasparaginylphenylalanylvalylglutaminylylthreonyl valylarginylglutaminylglycylutaminylvalylarginylvalylthreonyl glycylylvalyllysylphenylalanyltyrosylarginycylglutaminyl serylserylleucylaspartylpglutaminylglutamylglycylaspartyl leucylanylglutamylalanyltyrosylprolylglutamyserylvalylasparaginyl alanylthreonylaspylthreonylserylthreonylalanylglutamylltamylglutamyl glutamylvalylprolylalanyleucylvalylserylthreonylalanylglutaminyl glutaminylthreonylarginylisoleucylglutylhistidylphenylalanyl aspartylalanylarlylglutamylmethionylvalylisoleucylaspanyl glutaminylleucylprolylhistidyllysyllprolylprolyllysylprolyl lysylserylargierylisoleucylalanylalanyllysylalanylglylglutaminyl serylprolylserylprolylisollprolylvalylarginylhistidylvalylarginyl ylvalylarginylserylvalylserylprolylalonylserylprolylisoleucyl arginylserylvathionylarginyllysylthreonylglutaminylaylglycyl prolylglutamylvalylprolylprolytamylglycyltyrosylvalylalanyl serylseryylarginylglutamylthreonylthreonylleucyminylisoleucyl arginylthreonylglutamylgcylarginyltyrosylglycylvalylglutaminyl eucylserylglycylalanylalanylglycylalanserylalanylseryltyrosyl alanylalanylglulalanyllysylglutamylvalyllysylglutaminlanyl alanylvalylalanylthreonylvalylvallalanylarginylvalylarginylglutamyl proltamylglutaminylthreonylalanylglutaminyeonylalanylvalylhistidyl isoleucylglutaglutaminylvalylarginyllysylglutamylalathreonyl lysylvalylvalylvalylalanylalanlutaminylglutamylleucyllysyl serylarginleucylthreonylthreonyllysylglutaminylgalylthreonyl histidylglutamylglutaminylylglutamyllysylthreonylphenyl alanylvalylalanylalanyllysylalanyllysylglutamyloleucylseryl glutamylglutamylisoleucylttaminylvalylthreonylglutaminyl glutamylylthreonylarginyllysylthreonylvalylvalnylthreonyl prolyllysylvalyllysylglutamlarginylglycylarginylglutamylglycyl isolutamylglutaminylvalylglutaminylisoleuethionylarginyllysyl glutamylalanylgluthreonylisoleucylalanylvalylalanylthreoutaminyl glutamylthreonylisoleucylleucyonylmethionylalanylthreonylarginyl glututaminylvalylthreonylhistidylglycyllyslalanyl                                                                                       glutamylalanylvalylalanylthreon

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8 thoughts on “The longest English word”

    1. thanks for the correction dude and for bothering to count the actual number of letters. It did not occur to me to actually do that.

    1. Because it’s not in the English dictionary, though technically it’s still English.

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