The year's unlikeliest viral video

A video of a man reading the longest word in the English language has become an unlikely viral hit.

About 850,000 people have watched Dmitry Golubovskiy reading the 189,819-letter word.

However, it's not clear how many watched the entire three hours 33 minutes and 23 seconds it took him to say it.

The word, the full name of a giant protein known as Titin, begins with "Methio" ends with "leucine".

It is so long because proteins are named after all of the chemicals within them - and Titin is the largest every discovered.

However, as it is a scientific term, it is not to be found in the Oxford English Dictionary where the longest word if the 45-letter "pneumonoultramicroscopicsilicovolcanoconiosis".