Question

which is the longest word in english​

Answer 1

Answer:

Pneumonoultramicroscopicsilicovolcanoconiosis

Answer 2

The word is 189,819 letters long. It's actually the name of a giant protein called Titin. Proteins are usually named by mashing-up the names of the chemicals making them. And since Titin is the largest protein ever discovered, its name had to be equally as large.