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  1. Longest word in English - Wikipedia

    The longest officially recognized place name in an English-speaking country is Taumata­whakatangihanga­koauau­o­tamatea­turi­pukaka­piki­maunga­horo­nuku­pokai­whenua­ki­tana­tahu …

  2. 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 disease …

  3. Discover What Is the Longest Word in the World - Rosetta Stone

    Apr 21, 2025 · Find the answer to the question “What is the longest word in the world?” with our guide to long words around the globe, including the longest words in English.

  4. The World's Longest-Running Lab Experiment Is Almost 100 Years Old

    1 day ago · The world's longest-running lab experiment is an ongoing work in sheer scientific patience. It has been running continuously for nearly a century, under the close supervision of several …

  5. 10 Longest Words In The World - Lingopie

    May 28, 2025 · Longest English Word: "Pneumonoultramicroscopicsilicovolcanoconiosis" holds the record for the longest word in English, often cited for its length and complexity.

  6. 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.

  7. 150 Longest Long Words in English (+ Definitions) - Writing Beginner

    This is the ultimate list of the 150 longest long words in the English language.

  8. What Is the Longest Word in English? - Reader's Digest

    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.

  9. The Longest Word In The World: Which One Holds The Record?

    Nov 10, 2025 · From the longest word in English to giant German compounds, discover the longest words in the world and why they’re so fascinating.

  10. 20 Longest Words in English (With Meanings, Pronunciation) - Parade

    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.