Pneumonoultramicroscopicsilicovolcanoconiosis…the longest word in the English language ?

The longest word in the major English language dictionaries is


( 45 letters)


Meaning: a disease caused by the prolonged inhalation of fine siliceous dust, specifically from a volcano.

Also spelled pneumonoultramicroscopicsilicovolcanokoniosis

Research has discovered that this word was originally a hoax: medically, it is the same as silicosis.

The Oxford English Dictionary contains

pseudopseudohypoparathyroidism   (30 letters)


Meaning: an incomplete form of pseudohypoparathyroidism marked by the same constitutional features but by normal levels of calcium and phosphorus in the blood serum.

The longest non-technical word in major dictionaries is

flocci­nauci­nihili­pili­fication  (29 letters)


Meaning: The action or habit of judging something to be worthless.

1741: William Shenstone, William Shenstone, Letters,

”I loved him for nothing so much as his flocci-nauci-nihili-pili-fication of money.”




next: the longest word in the Spanish language


Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s