"Longest word" redirects here. For the longest English word, see Longest word in English.
The longest word in any given language depends on the word formation rules of each specific language, and on the types of words allowed for consideration.
Agglutinative languages allow for the creation of long words via compounding. Words consisting of hundreds, or even thousands of characters have been coined. Even non-agglutinative languages may allow word formation of theoretically limitless length in certain contexts. An example common to many languages is the term for a very remote ancestor, "great-great-.....-grandfather", where the prefix "great-" may be repeated any number of times. The examples of "longest words" within the "Agglutinative languages" section may be nowhere near close to the longest possible word in said language, but is instead a popular example of a text-heavy word.
Systematic names of chemical compounds can run to hundreds of thousands of characters in length. The rules of creation of such names are commonly defined by international bodies, therefore they formally belong to many languages. The longest recognized systematic name is for the protein titin, at 189,819 letters.[1] While lexicographers regard generic names of chemical compounds as verbal formulae rather than words,[2] for its sheer length the systematic name for titin is often included in longest-word lists.
Longest word candidates may be judged by their acceptance in major dictionaries such as the Oxford English Dictionary or in record-keeping publications like Guinness World Records, and by the frequency of their use in ordinary language.
^McCulloch S (December 2009). "Longest word in English". Sarah McCulloch.com. Archived from the original on 14 January 2010. Retrieved 12 October 2016.
^Oxford Word and Language Service team. "Ask the experts – What is the longest English word?". AskOxford.com / Oxford University Press. Archived from the original on 13 September 2008. Retrieved 13 January 2008.
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