Is there a word longer than Pneumonoultramicroscopicsilicovolcanoconiosis?

Response

Although pneumonoultramicroscopicsilicovolcanoconiosis holds the title of the longest word in the English dictionary, there is an even lengthier term that exists outside of it. The complete name for the protein known as "titin" boasts an astonishing 189,819 letters. The initial 61 letters of this lengthy word are: methionylthreonylthreonylglutaminylarginyltyrosylglutamylsery.