Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch

This 58-letter name is given to a train station in Wales. It means “St. Mary’s church in the hollow of the white hazel near a rapid whirlpool and the Church of St. Tysilio of the cave. (Read The Most Mind-Boggling Lengths around the World for more details).

Ultrasupermicroscopicsilvacanacorniopis

This word has 39 letters. It is a scientific term for miner’s lung.

Praetertranssubstantiationalistically

This word has 37 letters. It was the longest published English word in the novel Ultimately Ripped by Mark McShane, published in 1963. It is a term related to the transubstantiation of Christ during the Eucharist. Specifically, it means the act of surpassing the act of transubstantiation, referring to the transformation of bread and wine into the blood and body of Christ during mass in the Roman Catholic faith. This word was also included in several editions of the Guinness Book of World Records.

Preantidislangtiurestimatationallyastroanationalsoned

This word has 53 letters and it is not included in dictionaries. It means good at astronomy.

Hassasiyetsizlestiriveremeyebileceklerimizdenmisiniz

I came across this long word in Turkish language. It simply means “Are you from those whom we will not be able to make sensitive to …?”

Twoallbeefpattiesspecialsaucelettucecheese-picklesonionsonasesameseedbun

This extremely long word was used in a McDonald’s Restaurant advertisement in 1975. McDonald has developed this extraordinary trademark as its TV advertising campaign which had successfully captured memorable moments for its image and reputation.

This is the longest station name found in the UK. It has 68 letters.

This long German word has 159 letters. It means “a blue shiny cube shaped ornament on the Christmas tree of a man who lives in a small white house in a forest full of yellow trees and collects tickets for a living.”

Fluvialgeomorphologicaldendrochronology

This English word has 39 letters. It is related to the study of petrified trees at the bottom of dried up bodies of water.

Krungthepmahanakornamornratanakosinmahintarayutt-hayamahadilokphopnopparatrajathaniburiromudomrajaniw-esmahasatharnamornphimarnavatsatitsakattiyavisanukam

This is by far the longest place name found in the world. It is the name of Bangkok in Thailand. For most Thais, it is simply referred to Krung Thep, or Jewelled City of the God Indra. (Read The Most Mind-Boggling Lengths around the World for more details).

Siebenhundertsiebenundsiebzigtausendsiebenhunder-tundsiebenundsiebzig

Try to say this 68-letter-long German word, has your tongue being twisted? It means 777,777. And 999,999 is pronounced as “NeunhundertneunundneunzigtausendneunhundertuNdneunundneunzig (60 letters) “in German. Interesting, right?

Irapusatinkaatsempokitasanoigavetapaakemparorokarityo

In Matsigenka, also spelled as Machiguenga, this is probably the longest word. It means: They will probably really go head over heels into the water when they arrive but not stay that way [Pierre Abbat].

Nebepasikiskiakopusteliaujanciuosiuose

This 38-letter long word is possibly the longest (according to its grammatical rule) word in Lithuanian which means “In those, of masculine gender, who aren’t gathering enough wood sorrel by themselves anymore.” Villius Puidokas, however, provides a slightly longer version of this word as “nebeprisikiskiakopusteliaujanciuosiuose (39 letters), meaning “in those, of masculine gender, who aren’t gathering enough wood sorrel by themselves anymore.”

Prijestolonaslijednikovica

This 26-letter long word was found in Croatian. It means “The wife of an heir to the throne” [Vjekoslav Babic].

Ryentgyenoelyektrokardiografichyeskogo

This is the longest word found in Russian language. It has 33 Cyrillic letters and 38 Roman. According to 1996 Guinness Book of World Records, it refers to “of the X-ray electrocardiographic.”

This is the ancient Greek word translated by Liddell and Scott as “name of a dish compounded of all kinds of dainties, fish, flesh, fowl, and sauces.” The original Greek spelling for this Greek word had 171 characters which remained for centuries as the known longest word. Its English transliteration is a 182-letter word of Lopadotemachoselachogaleokranioleipsanodrimhypotrimmatosilphioparaomelitokatakechym-enokichepikossyphophattoperisteralektryonoptekephalliokigklopeleiolagoiosiraiobaphetragan-opterygon (Read The Most Horrible English Words for more information) which is a Greek word from Aristophanes’ comic play, the Ecclesiazusae, roughly means a stew made up of all the leftovers from the last two days.

This is found in Turkish and it has 43 letters and 18 syllables. It is regarded as the longest word in Turkish. It translates as “Are you one of the people whom we couldn’t Czechoslovakianize (i.e. make into a Czechoslovakian)”? However, the last seven letters are usually printed as a separate word [Edward Sawyer].

Najneobhospodarovavatelnejsieho

This is the longest Slovak word. It has 31 letters. According to Miroslav Sedivy, who translates this word as “of the less cultivable” (about a field).

In Hungarian, this 44-letter word is the longest word. According to the 1996 Guinness, its translation is “for your constant mentioning of the fact that [a particular thing] is not profane.”

This is by far the longest word in Swedish. It is at 130 letters. According to 1996 Guinness, it translates as “preparatory work on the contribution to the discussion on the maintaining system of support of the material of the aviation survey simulator device within the north-east part of the coast artillery of the Baltic.”

This is another long Swedish word found by Fredrik Viklund in a Swedish patent application from about 1910 to 1930. It is referred to what is now called a

or in English it means “Low pressure quicksilver vapour discharge apparatus.”

According to Ville Koskivaara, this is the longest word in Finnish which means “even with its quality of not being possible to be made irrational.”

Rechtsschutzversicherungsgesellschaften

This 39-letter long German word, according to Guinness, is the longest dictionary word used in everyday usage. It means “insurance companies which provide legal protection.”

According to Johan Sydseter, this 53-letter long word is the longest Norwegian word. It translates as “device for measuring the distance between atoms in crystallized substances.”

In Icelandic, this 29-letter long word is regarded as the longest word. It means “Supreme Court barrister.”

Kindercarnavalsoptochtvoorbereidingswerkzaamheden

This Dutch word has 49 letters. According to 1996 Guinness, it is regarded as the longest in Dutch language. It translates as “preparation activities for a children’s carnival procession,” or literally, “for children Carnival procession preparation activities.”

Zandzeepsodamineraalwatersteenstralen

This 37-letter long Dutch word is the longest Dutch word is an official word in Van Dale. It appears in a book written by Herman Brusselmans, who is a (Flemish) Belgian writer but could write in Dutch. It means “take a hike”, “get out of here!” or “p***off.”

According to Martin Vancura, this Czech word is officially regarded as the longest word in Czech. It refers to an instrumental case. This word is quite similar to Najneobhospodarovavatelnejsieho, a Slovak word which is listed at number 18.

Kaksitariffikolmivaihevaihtovirtakilowattituntimittari

This word has 54 letters. It is the longest compound Finnish word which means “dual-tariff tri-stage AC kWh meter.” If the ending to this word is added as with “

”, it turns out to be a word of “kaksitariffikolmivaihevaihtovirtakilowattituntimittarillaansakaan”, which carries the meaning of “not even with his/her/its dual-tariff …”

In German, a word can be formed as long as you like. Though German words are generally long in their length, Germans do prefer abbreviations. This word is shortened to

This 63-letter long word is related to a law as described in German Wikipedia. It makes sense to any Germans that this word means “Law concerning how to assign the supervision duties for labelling of beef products.” In 1999 German Word of the Year, this word earned a special award as the longest German word.

This Hungarian word has 48 letters and is in the current record in Hungarian. Nevertheless, it is not used in everyday conversation or documentation in Hungarian language. It translates as “to those of you who can the very least be made profaned.” At time, there is another word,

which applies to most of the formal documentations. This 37-letter long word means: [obligation] “of filing an application to register a change” [of address etc.].

according to the orthography, is a word that exists in a perfectly correct form.

Paradimethylaminobenzaldehyde

This is the name of a chemical substance which has 29 letters. It is found on several internet web pages [Richard Eisenberger]. In Isaac Asimov’s essay about understanding chemical nomenclature [Mark Brader] titled “You, Too, Can Speak Gaelic,” points out that this word can be sung in accordance to the tune of The Irish Washerwoman, the best-known Irish jig.

Anhydrohydoxyprogesterone

This word has 26 letters which is the third longest chemical term in W3. It refers to a synthetic crystalline female sex hormone.

Pseudopseudohypoparathyroidism

This is a long medical term which is sometimes abbreviated to “pseudoPHP.” It refers to an inherited disorder that is caused by a mutation in the Gαs gene imprinted on the paternal chromosome. Unlike pseudohypoparathyroidism 1A, which presents with all the symptoms of hypoparathyroidism except the low parathyroid hormone levels, pseudoPHP presents only with the skeletal defects and none of the defects in calcium and phosphate homeostasis.

Superextraordinarísimo

This 22-letter word had once listed as the longest word in Spanish language. It means, “Extremely super-extraordinary.”) However, this word does not really get its legitimate usage. As for a writing form, a Google search shows no single instance of its usage. Its usage is only shown in certain Spanish listing pages on net. This word can be made a bit longer by attaching prefixes and suffixes. It makes a perfect 27-letter long word by using its adverbial form, superextraordinarísimamente (most super-spectacularly”).