Posted by: h4ck@lyst | December 12, 2007

Longest word!189819

Get the full longest word in a pdf file from here. It comprises of 189819 characters that is 39 pages!

Methionylthreonylthreonyl…isoleucine 189,819 letters Longest full chemical name of a protein[1] Technical; not in a major dictionary
183 letters Longest word coined by a major author[2] Coined; not in a major dictionary
Taumatawhakatangihangakoauauotamateapokaiwhenuakitanatahu 85 letters Longest officially recognized place name[3] Place name; not in a major dictionary
Pneumonoultramicroscopicsilicovolcanoconiosis 45 letters Longest word in a major dictionary[4] Technical; coined to be the longest word
Pseudopseudohypoparathyroidism 30 letters Longest non-coined word in a major dictionary Technical
Floccinaucinihilipilification 29 letters Longest nontechnical word
Antidisestablishmentarianism 28 letters Often noted as one of the longest words in the English language Coined
honorific­abilitud­initatibus 27 letters The longest word which appears in William Shakespeare‘s works


  1. So what does the longest word mean??

  2. Titin is the largest known protein, consisting of 34,350 amino acids. It is considered by some as the largest word in the English language, with 189,819 letters. The molecular weight of the mature protein is approximately 2,993,442.763 Da, and it has a theoretical isoelectric point of 6.01 The protein’s empirical chemical formula is C132983H211861N36149O40883S693. It has a theoretical instability index (II) of 39.69, indicating that it would be stable in a test tube. The protein’s in vivo half-life, the time it takes for half of the amount of protein in a cell to disappear after its synthesis in the cell, is predicted to be approximately 30 hours (in mammalian reticulocytes).


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