The longest word in any of the major English language dictionaries is pneumonoultramicroscopicsilicovolcanoconiosis (45 letters), a word that refers to a lung …

Apr 11, 2023 · At over 180,000 letters long, the chemical name of the protein titin is often said to technically be the longest English word. If spoken out loud, this word takes over three hours to …

This is the ultimate list of the 150 longest long words in the English language. If you’re here, you either have an undying love for polysyllabic monstrosities or you’ve simply lost a bet and now …

Mar 9, 2023 · Here are some examples of the longest words by category. 1. Methionylthreonylthreonyglutaminylarginyl ... isoleucine. Note the ellipses. All told, the full …

Jun 21, 2023 · What is the longest word in English? The longest English word is pneumonoultramicroscopicsilicovolcanoconiosis, which is forty-five letters long and refers to a …

Apr 28, 2025 · Most English words longer than about 15-20 letters are scientific, meaningless, or highly specialized, and they tend to be formed by affixation. This is the act or process of …

Jun 22, 2024 · What's the longest word in English? We have the longest single word and a list of 20 English words with the most letters. Plus, what they mean and how to say them.

Having the greater length of two or the greatest length of several: the long edge of the door. 2. Of relatively great duration: a long time. 3. Of a specified linear extent or duration: a mile long; an …

Mar 24, 2025 · Want to impress your friends with some ridiculously and perhaps unnecessarily long words? This is the list for you! Number of Letters: 189,819. Definition: Yep, there’s a word …

May 29, 2025 · There are about a million words in the English language, but do you know the longest word in English? You may think it’s antidisestablishmentarianism, at 28 letters long.