What are the 10 longest words?
- Pneumonoultramicroscopicsilicovolcanoconiosis.
- Floccinaucinihilipilification.
- Incomprehensibility.
- Surreptitious.
- Uncharacteristically.
- Supercalifragilisticexpialidocious.
- Subdermatoglyphic.
- Abstentious.
Pneumonoultramicroscopicsilicovolcanoconiosis is the longest word entered in the most trusted English dictionaries.
Place with the Longest Single Word in the World
The place with the longest single word is Taumatawhakatangihangakoauauotamateaturipukakapikimaungahoronukupokaiwhenuakitanatahu. At 85 letters, this Māori name for a hill in New Zealand is often truncated to Taumata.
1. methionylthreonylthreonylglutaminylalanyl… isoleucine. You'll notice there's an ellipsis here, and that's because this word, in total, is 189,819 letters long, and it's the chemical name for the largest known protein, titin.
Aequeosalinocalcalinoceraceoaluminosocupreovitriolic. This is the longest word in English which is composed of seven words. This 52-letter word was coined by Dr. Edward Strother to describe the spa waters in Bath, England.
In fact, most of the very long words in the dictionary are scientific terms: the second-longest word is electroencephalographically, which has 27 letters, and means 'by means of an electroencephalograph' (referring to a machine used to record brain activity).
Pneumonoultramicroscopicsilicovolcanoconiosis is a New Latin word made up of five parts. The combining form pneumono- means “lung.” The word ultramicroscopic refers to something so small that it can't be seen by normal microscopes.
The longest word in the English language, pneumonoultramicroscopicsilicovolcanoconiosis, won primary school speller Jemimah Elise Sampson, the East Coast Radio's Last Kid Standing title, as seen in the video below published by the East Coast Radio.
The longest word in the standard German dictionary is Kraftfahrzeug-Haftpflichtversicherung – which is the word for motor vehicle liability insurance. But at 36 letters, it's rather puny. Rechtsschutzversicherungsgesellschaften, a touch longer at 39 letters, is the language's longest non-dictionary word.
What is the longest French word? The longest French word officially recognised by the Académie française is "anticonstitutionnellement", which consists of 25 letters. It is, in other words, the longest word in the French dictionary.
Is there a word longer than 45 letters?
The longest word entered in most standard English dictionaries is Pneumonoultramicroscopicsilicovolcanoconiosis with 45 letters. Our definition is "a lung disease caused by inhalation of very fine silicate or quartz dust." The entry for this word can be found in our Medical Dictionary.
When the little girl was born on September 12, 1984, her parents wrote Rhoshandiatellyneshiaunneveshenk Koyaanisquatsiuth Williams on her birth certificate. However three weeks later they decided it simply wasn't long enough, so they filed an amendment which made it 1,019 letters long.

The long form of the name is the longest place name in the United Kingdom and one of the longest in the world at 58 characters (51 "letters" since "ch" and "ll" are digraphs, and are treated as single letters in the Welsh language).
Pneumonoultramicroscopicsilicovolcanoconiosis meaning
Pneumonoultramicroscopicsilicovolcanoconiosis is a string of Latin terms that together describe an inflammatory lung disease caused by long-term inhalation of silica dust.
Russian. Most likely one of the longest Russian words is a chemical term тетрагидропиранилциклопентилтетрагидропиридопиридиновая (tetragidropiranilciklopentiltetragidropiridopiridinovaya), which contains 55 letters. It was used in Russian patent RU2285004C2 (granted and published in 2006).
So Far One three-letter word does much of the heavy lifting in the English language. The little word "run" — in its verb form alone — has 645 distinct meanings.
An English pangram is a sentence that contains all 26 letters of the English alphabet. The most well known English pangram is probably “The quick brown fox jumps over the lazy dog”.
- Aequeosalinocalcalinoceraceoaluminosocupreovitriolic. ...
- Pneumonoultramicroscopicsilicovolcanoconiosis. ...
- Hippopotomonstrosesquippedaliophobia. ...
- Supercalifragilisticexpialidocious. ...
- Hippopotomonstrosesquipedalian. ...
- Pseudopseudohypoparathyroidism.
Aequeosalinocalcalinoceraceoaluminosocupreovitriolic. This is the longest word in English which is composed of seven words. This 52-letter word was coined by Dr. Edward Strother to describe the spa waters in Bath, England.
The longest word entered in most standard English dictionaries is Pneumonoultramicroscopicsilicovolcanoconiosis with 45 letters. Our definition is "a lung disease caused by inhalation of very fine silicate or quartz dust." The entry for this word can be found in our Medical Dictionary.