What's the longest word in the dictionary?

What's the longest word in the dictionary?
What's the longest word in the dictionary?, Longest Word: Which Is Biggest In English Language?, "Supercalifragilisticexpialidocious" from "Mary Poppins" is impressive, but not the longest. The man who created supercalifragilisticexpialidocious died this month, leaving one of the longest English words as his legacy. A few are even longer -- including