Methionylthreonylthreonylglutaminylarginyl...isoleucine

The longest known word in English, at 189,819 letters, is the chemical name of titin. Titin is the largest known protein. This word takes roughly 3 hours to pronounce.

A shortened version of the longest english word. The actual word has about 900,000 characters (189,819 to be specific). It is the chemical name for titin, which is the largest known protein. The word is obviously rarely used as it takes about 3 hours to pronounce, and it would be a lot quicker to just say "titin".

a very fucking long word
you can read the whole thing, just search up "copy and paste every word in existence" to find the article

Titin is the largest protein yet discovered. Its full chemical name is 189,819 letters long and, depending on how you define a “word” is the longest word in the English language. It is not included in the dictionary – few lexicographers
accept chemical formulae as words. But when people go round Googling “What’s the longest word in the English language?”, they don’t really care if it’s a “real” word or not.

This is by record, the longest pronounced English word ever said is Methionylthreonylthreonylglutaminylarginyl…isoleucine, I cannot say its full name because that will take way too long, look it up if you want the full word.

Methionylthreonylthreonylglutaminylarginyl… isoleucine is the chemical name for the protein of “titin” also known as “connectin.” The largest known protein that consists of 26, 926 amino acids is made up of 189, 819 letters and can take about three hours to pronounce.