The longest English word is also the longest word in the world, with almost 190,000 letters. It is the chemical name for titin, the largest protein known. The longest word in the English dictionary however, is the 45-letter word "pneumonoultramicroscopicsilicovolcanoconiosis", which refers to a lung disease.
As we saw at the start of our hunt, the longest word according to a lot of sources is the technical name for the protein titin. It is the same across all languages and has nearly 200,000 letters.
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.
So what's the word? Wikipedia's says that it's "Methionylthreonylthreonylglutaminylarginyl ... isoleucine" (ellipses necessary), which is the "chemical name of titin, the largest known protein." Also, there's some dispute about whether this is really a word.
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.
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).
Honorificabilitudinitatibus (honōrificābilitūdinitātibus, Latin pronunciation: [hɔnoːrɪfɪkaːbɪlɪtuːdɪnɪˈtaːtɪbʊs]) is the dative and ablative plural of the medieval Latin word honōrificābilitūdinitās, which can be translated as "the state of being able to achieve honours".
Supercalifragilisticexpialidocious is it real and the longest word in the dictionary? Supercalifragilisticexpialidocious is a real word but is not the longest word in the dictionary. Pneumonoultramicroscopicsilicovolcanoconiosis is the longest word in the dictionary.
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.
The longest official geographical name in Australia is Mamungkukumpurangkuntjunya. It has 26 letters and is a Pitjantjatjara word meaning "where the Devil urinates".
Pneumonoultramicroscopicsilicovolcanoconiosis is the longest word entered in the most trusted English dictionaries.
Aequeosalinocalcalinoceraceoaluminosocupreovitriolic (52 letters) In the 17th century, Dr. Edward Strother coined the 52-letter word aequeosalinocalcalinoceraceoaluminosocupreovitriolic. The word is used to describe the spa waters in Bath, England.
1,000,000,000 (one billion, short scale; one thousand million or one milliard, one yard, long scale) is the natural number following 999,999,999 and preceding 1,000,000,001. With a number, "billion" can be abbreviated as b, bil or bn. In standard form, it is written as 1 × 109.
It's a matter of debate. According to the Oxford English Dictionary, the 45 letter 'pneumonoultramicroscopicsilicovolcanoconiosis' is the longest English word. Maybe it's because including the Titin proteins full-name would use up nearly 100 pages?
1000000 in words is One Million.
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.
5. Floccinaucinihilipilification (29 letters)
3. Pneumonoultramicroscopicsilicovolcanoconiosis. At 45 letters, this is the longest defined word you'll find in a major dictionary.
honorificabilitudinitatibus (uncountable) (chiefly humorous, obsolete, rare) The state of being able to achieve honours; honourableness.
Afrikaans. Tweedehandsemotorverkoopsmannevakbondstakingsvergaderingsameroeperstoespraakskrywerspersverklaringuitreikingsmediakonferensieaankondiging is the longest word in Afrikaans. It has 136 letters!
4. The longest Polish word contains 54 letters. Dziewięćsetdziewięćdziesięciodziewięcionarodowościowego is the longest Polish word. It roughly stands for “of nine-hundred and ninety-nine nationalities”.
A funny phrase in japanese is “toragahitowokamoutosurutokinounarinow” 虎が人を噛もうとするときのうなり声。 It is 37 letters long and is comprised of a 17 syllables. It is a very odd phrase, as it is defined as “the growl a tiger makes when it is about to about to bite someone”.
Although it is quite challenging to pinpoint the longest word of the Ukrainian language, “Нікотинамідаденіндинуклеотидфосфат” is often referred to as one. Containing a total of 34 characters, it is the Ukranian chemical term for “Nicotinamide Adenine Dinucleotide Phosphate.”