WTF Fun Fact – World’s Longest Word

The world’s longest word is 189,819 letters long and takes 3.5 hours to pronounce (methionylthreonylthreonylglutaminylalanyl…isoleucine). It is the chemical name of the largest known protein called Titin. – WTF Fun Facts

Source: What Is The Longest Word In The World? (babbel.com)