Translators and captioners sometime face the challenge of long convoluted words, especially in the sciences. According to the European Centre for Modern Languages, among the European languages, as one would expect, German has the longest word. In the list chemical names are not included, but some dreadful diseases are.
Those suffering from hippopotomonstrosesquipedaliophobia* should not click, but for the rest of us, to see the list click here.
*Fear of long words