The Longest English Word with 189,819 letters

This fact may be hardly known to many and we are not just talking about non-native english speakers but english speakers as well. Also this is not just the longest name of any word in english but the longest word in any other language.
The Longest word in English Language consists of 189,819 (One Eighty Nine Thousand Eight Hundred and Nineteen) Letters. It is the chemical name of titin (the largest known protein) and is responsible for the passive elasticity of the muscle. It consists of 244 proteins.

Longest English Word

We are not sure whether this word is written in any dictionary or book and would rather love if some one could refer us the written material but we know the start and end words.
It starts from “Methionylthreo” and ends at “isoleucine”.


Longest English Word Published

While we cannot figure our the largest word that is published or not but we do know that the longest word published in English has 1913 letters in it, it is the chemical name for tryptophan (One of the 20 standard amino acids).
It starts from “Methionylglut” and ends at “serine”

Although these words are not used in daily routine but still there are many words with lots of characters. Let us tell you some other Longest words in English.

Lopadotemachoselachoga…baphetraganopterygon:
Its total length is 183 letters, not found in any dictionary but the longest name ever used by an
author in his book.

Pneumonoultramicroscopicsilicovolcanoconiosis:
A 45-letter word, used for a lung disease, often called as Silicosis. It is the longest English word
appeared in Oxford’s Dictionary.

Supercalifragilisticexpialidocious:
Another English 34-letter word. It was used in a song in a Disney movie Mary Poppins that was written by Sherman Brothers.

Pseudopseudohypoparathyroidism:
An English word having 30 letters in it, is used as a medical disorder.

Honorificabilitudinitatibus:
A 27 letter word that was used by Shakespeare in his writings.

Some other amazing long English words:

Floccinaucinihilipilification (29 letters)
Antidisestablishmentarianism (28 letters)
Otorhinolaryngological (22 letters)
Psychophysicotherapeutics (25 letters)

Now it’s your turn, if there are some other words that you think should be included in the list above, feel free to post it in the comments below.

Image credit: kirjoittaessani marcus_jb1973

4 Responses to The Longest English Word with 189,819 letters
  1. Gordon Freeman
    September 5, 2012 | 4:02 pm

    ” (One Eighty Nine Thousand Eight Hundred and Ninety Nine) ”

    you mean — ” One hundred and Eighty Nine Thousand, Eight hundred and Nineteen ”

    (pedantic much?) lolz

    Oh btw — it’s not strictly speaking a word! It’s a name, and not one single name either but a concatenation of lots of names. It may not even be entirely English, many scientific names are taken from their old Greek / Latin name, and/or are derivatives of.

    Sorry but you are WRONG.
    (attention grabbing headlines! hey why don’t you get a job for a tabloid newspaper?!)

  2. melded.chaoz
    September 5, 2012 | 7:39 pm

    189,819 is not One Eighty Nine Thousand Eight Hundred and Ninety Nine.

    That would be: One hundred and eighty-nine thousand, eight hundred and nineteen.

  3. Nauman
    November 8, 2012 | 2:31 pm

    Nicotineamidedinucleotidephosphate 34 lettered word is a chemical. I read it when i was in my O’level chemistry class.

  4. Nauman
    November 8, 2012 | 2:33 pm

    Nicotineamideadeninedinucleotidephosphate 41 lettered word is a chemical. I read it when I was in my O’level chemistry class.

Leave a Reply

Wanting to leave an <em>phasis on your comment?


+ eight = 17

Trackback URL http://www.yesiknowthat.com/the-longest-english-word-with-189819-letters/trackback/