Do you know the longest English word??

Actually I don't know about this.Do you want to know that words???

• antidisestablishmentarianism opposition to the disestablishment of the Church of England - 28 letters
• floccinaucinihilipilification the estimation of something as worthless - 29 letters
• pneumonoultramicroscopicsilicovolcanoconiosis a supposed lung disease - 45 letters
• otorhinolaryngological - 22 letters
• immunoelectrophoretically - 25 letters
• psychophysicotherapeutics - 25 letters
• thyroparathyroidectomized - 25 letters
• pneumoencephalographically  - 26 letters
• radioimmunoelectrophoresis - 26 letters
• psychoneuroendocrinological - 27 letters
• hepaticocholangiogastrostomy - 28 letters
• spectrophotofluorometrically - 28 letters
• pseudopseudohypoparathyroidism - 30 letters

The words very long and I never found that words. Usually, the above words we can found in the field of science : the name of enzyme, bacteria or others. Let's us found the others and share with me :)