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  1. Longest word in English - Wikipedia

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

  2. 13 of the Longest Words in the English Language - ThoughtCo

    May 11, 2025 · Take your vocabulary to the next level with this list, featuring 13 of the longest words in the English language.

  3. The Longest Long Words List - Merriam-Webster

    Sep 2, 2025 · The longest word entered in most standard English dictionaries is Pneumonoultramicroscopicsilicovolcanoconiosis with 45 letters. Our definition is "a lung …

  4. The 10 Longest Words in the English Language - Worldwide ...

    May 8, 2025 · These words not only capture our fascination but also demonstrate the language’s ability to convey intricate concepts and ideas. In this article, we will explore the 10 longest …

  5. 20 Longest Words in English (With Meanings, Pronunciation ...

    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.

  6. The Longest Word in the Dictionary | Britannica Dictionary

    Question What's the longest word in the English language? — Lily, United States Answer

  7. 10 Longest Words In The English Language - themost10.com

    Topping the list as the longest word in the English language is pneumonoultramicroscopicsilicovolcanoconiosis. This mouthful of a word refers to a lung …