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Definitions by Penguin 🐧

Pneumonoultramicroscopicsilicovcanoconiosis 

The longest word in the dictionary.
This is a man-made word which means a disease in your lungs caused by sand or volcanic ash in your lungs.
Don’t climb that volcano, or your doctor will diagnose you with pneumonoultramicroscopicsilicovolcanoconiosis.
You have Pneumonoultramicroscopicsilicovcanoconiosis