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Video: The Longest Word in English

Warning: If you suffer from hippopotomonstrosesquipedaliophobia, which refers to a fear of long words, leave this page immediately. 

The longest English word spans about fifty-seven pages, according to Grammarly.com. It’s the chemical name for the titin protein found in humans. Its full name has 189,819 letters. Would you like to hear it pronounced? Pop some popcorn before you get started!

It will take you over three hours to watch — it’s just slightly shorter than the film Gone with the Wind. Dictionaries omit the name of this protein and many other long words. Obviously, dictionaries have space constraints, and the average person would have no need to know the technical names of chemicals.



Other long words and their meanings

Pneumonoultramicroscopicsilicovolcanoconiosis — A lung disease that is otherwise known as silicosis. It is the longest word in a major dictionary.

Hippopotomonstrosesquipedaliophobia — A fear of long words.

Supercalifragilisticexpialidocious — Used as a nonsense word by children to express approval or to represent the longest word in English. Famous for being created for the Mary Poppins film and musical.

Pseudopseudohypoparathyroidism — An inherited disorder that closely simulates the symptons but not the consequences of pseudohypoparathyroidism and, thus it has mild or nomanifestations of hypoparathyroidism or tetanic convulsions.

Floccinaucinihilipilification — The act or habit of describing or regarding something as unimportant, of having no value or being worthless.

Antidisestablishmentarianism — Opposition to the withdrawal of state support or recognition from an established church, especially the Anglican Church in 19th-century England.

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