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What is pneumonoultramicroscopicsilicovolcanoconiosis?

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Hello YouArmy,

Good Morning,

So, At first, you may think what the hell this word is? Did you invert the English word? If it is a word what its parents’ name? I want to know (lol) ūüėÜ ūüėܬ†

Longest English Word - pneumonoultramicroscopicsilicovolcanoconiosis
Longest English Word – pneumonoultramicroscopicsilicovolcanoconiosis

Leaving the joke, let’s jump to the point. Why Pneumonoultramicroscopicsilicovolcanoconiosis is the longest word in English? What it’s history? How is it pronounced? What does it mean? Today we will know about all of this questions answer. Here we go…

That said, Pneumonoultramicroscopicsilicovolcanoconiosis is an English word, refers to lung disease is also known as ‚ÄėSilicosis‚Äô. However, this 45-letter word also referred to as “P45”, is synonymous with Silicosis. It is the most recognized longest word in the English Dictionary. [As per Cambridge Dictionary & Wikipedia]



Inhalation of crystalline silica dust causes Silicosis (a form of occupational lung disease). When it related to silica inhaled from the ash of an erupting volcano or any industrial chimneys, more specifically called as Pneumono­ultra­microscopic­silico­volcano­coniosis.

It’s Pronunciation:¬†

Let’s break the word to understand it more clearly:


Pneumono¬≠¬†= A Greek word representing¬†pne√ļmŇćn,¬†which means-¬†Lung.

Ultra­Microscopic­ = So small to be seen by an ordinary optical microscope.

Silico­Volcano­ = Related to siliconic ash of an erupting volcano.

Coniosis = Any of various diseases or pathological conditions caused by dust inhalation


This word invented in the annual meeting of the National Puzzlers’ League (N.P.L) by its president Everett M. Smith. Highlighting in the headline for an article published by the New York Herald Tribune on February 23, 1935, Titled as “Puzzlers Open 103rd Session Here by Recognizing 45-Letter Word“.


Pneumono¬≠ultra¬≠microscopic¬≠silico¬≠volcano¬≠coniosis succeeded as the longest word in the English language recognized by the National Puzzlers’ League at the opening session of the organization’s 103rd semi-annual meeting held yesterday at the Hotel New Yorker. The puzzlers explained that the forty-five-letter word is the synonym of a special form of pneumoconiosis¬†caused by ultra-microscopic particles of silica¬†volcanic dust

That’s how this word becomes the king of Longest English Word.¬†

Hope you enjoyed this post. Thanks for reading! See you soon ūüėČ Till then stay happy, stay healthy!


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