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The longest words in the world
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Dorothy, Bookworm Extraordinaire
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Feb 06, 2021 11:19AM

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Pneumonoultramicroscopicsilicovolcanoconiosis. This word was coined purely to be obnoxious, and it means silicosis, a disease cause by inhaling tiny bits of ash.
It means the protein titin, the largest known protein. It is 189,819 letters long. It takes over 3 hours to pronounce.